易(yi)道至大(da)(da)，而(er)(er)包羅無(wu)(wu)盡(jin)，以(yi)其(qi)因象(xiang)制用也。象(xiang)本(ben)(ben)于(yu)(yu)數(shu)，數(shu)徵于(yu)(yu)氣；氣歸于(yu)(yu)道，道始于(yu)(yu)一。一生(sheng)而(er)(er)萬(wan)，分(fen)而(er)(er)無(wu)(wu)盡(jin)；為(wei)(wei)(wei)始終之(zhi)(zhi)(zhi)(zhi)(zhi)象(xiang)也。故(gu)全(quan)(quan)(quan)部易(yi)象(xiang)一天(tian)地宇宙。無(wu)(wu)物(wu)不涵蓋之(zhi)(zhi)(zhi)(zhi)(zhi)，舒卷之(zhi)(zhi)(zhi)(zhi)(zhi)也。此(ci)易(yi)卦(gua)有限，而(er)(er)用不窮。易(yi)道至簡，而(er)(er)德莫(mo)大(da)(da)；非圣知不足以(yi)探(tan)索其(qi)旨，解析其(qi)義(yi)。而(er)(er)辭則(ze)詳其(qi)大(da)(da)概(gai)云爾(er)！要(yao)知易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)大(da)(da)用，本(ben)(ben)于(yu)(yu)乾(qian)坤(kun)；而(er)(er)乾(qian)坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)象(xiang)，始于(yu)(yu)。乾(qian)坤(kun)為(wei)(wei)(wei)其(qi)成(cheng)形(xing)，則(ze)秉氣；氣在形(xing)中(zhong)，形(xing)以(yi)氣育。此(ci)后天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)定則(ze)也，又莫(mo)不有其(qi)數(shu)焉！數(shu)者(zhe)，所以(yi)別也，莫(mo)不有其(qi)名焉！名者(zhe)，所以(yi)紀也。后天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)物(wu)，必由(you)(you)陰(yin)陽交合以(yi)生(sheng)，分(fen)散以(yi)化(hua)；陰(yin)陽為(wei)(wei)(wei)天(tian)下父(fu)母；即易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)乾(qian)坤(kun)。乾(qian)坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)也。乾(qian)主陽，而(er)(er)其(qi)元為(wei)(wei)(wei)。坤(kun)主陰(yin)，而(er)(er)其(qi)元為(wei)(wei)(wei)；故(gu)有乾(qian)元坤(kun)元之(zhi)(zhi)(zhi)(zhi)(zhi)名。有九六之(zhi)(zhi)(zhi)(zhi)(zhi)數(shu)，其(qi)實也。此(ci)天(tian)下之(zhi)(zhi)(zhi)(zhi)(zhi)大(da)(da)本(ben)(ben)也，亦全(quan)(quan)(quan)易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)大(da)(da)本(ben)(ben)也。無(wu)(wu)二則(ze)生(sheng)化(hua)無(wu)(wu)由(you)(you)見(jian)(jian)，而(er)(er)全(quan)(quan)(quan)易(yi)卦(gua)爻無(wu)(wu)由(you)(you)成(cheng)也。故(gu)者(zhe)，為(wei)(wei)(wei)大(da)(da)化(hua)之(zhi)(zhi)(zhi)(zhi)(zhi)樞機，萬(wan)物(wu)之(zhi)(zhi)(zhi)(zhi)(zhi)本(ben)(ben)根，而(er)(er)全(quan)(quan)(quan)易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)基礎也。其(qi)用不單行(xing)，故(gu)見(jian)(jian)于(yu)(yu)乾(qian)坤(kun)。易(yi)以(yi)變為(wei)(wei)(wei)主，變則(ze)求其(qi)繁，故(gu)由(you)(you)進而(er)(er)成(cheng)與(yu)；復由(you)(you)；進而(er)(er)成(cheng)與(yu)。于(yu)(yu)是乾(qian)坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)象(xiang)成(cheng)矣！
八(ba)卦(gua)(gua)(gua)(gua)之(zhi)(zhi)(zhi)象(xiang)，由(you)變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)而(er)(er)成(cheng)(cheng)(cheng)(cheng)(cheng)。六(liu)十四(si)卦(gua)(gua)(gua)(gua)之(zhi)(zhi)(zhi)象(xiang)，則(ze)(ze)(ze)由(you)變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)而(er)(er)成(cheng)(cheng)(cheng)(cheng)(cheng)。則(ze)(ze)(ze)全(quan)易(yi)(yi)各卦(gua)(gua)(gua)(gua)，莫(mo)不出(chu)(chu)于乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)；而(er)(er)乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)，又實為(wei)變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)之(zhi)(zhi)(zhi)原(yuan)體(ti)也(ye)(ye)；乾(qian)(qian)(qian)(qian)與乾(qian)(qian)(qian)(qian)，無變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)也(ye)(ye)；坤(kun)(kun)(kun)與坤(kun)(kun)(kun)，亦無變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)也(ye)(ye)。其(qi)(qi)有(you)(you)(you)(you)變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)，必(bi)起(qi)于相(xiang)交(jiao)；交(jiao)則(ze)(ze)(ze)變(bian)(bian)(bian)(bian)(bian)矣(yi)！故(gu)乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)為(wei)變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)之(zhi)(zhi)(zhi)主，亦變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)之(zhi)(zhi)(zhi)原(yuan)體(ti)。又由(you)其(qi)(qi)相(xiang)交(jiao)，而(er)(er)后有(you)(you)(you)(you)變(bian)(bian)(bian)(bian)(bian)化(hua)(hua)也(ye)(ye)。故(gu)乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)二卦(gua)(gua)(gua)(gua)，為(wei)全(quan)易(yi)(yi)之(zhi)(zhi)(zhi)本(ben)；亦生化(hua)(hua)之(zhi)(zhi)(zhi)本(ben)也(ye)(ye)。后天(tian)之(zhi)(zhi)(zhi)物，最(zui)大者(zhe)，則(ze)(ze)(ze)天(tian)地(di)也(ye)(ye)。最(zui)近者(zhe)，則(ze)(ze)(ze)男女也(ye)(ye)。皆(jie)以(yi)(yi)相(xiang)交(jiao)，而(er)(er)成(cheng)(cheng)(cheng)(cheng)(cheng)生化(hua)(hua)。則(ze)(ze)(ze)乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)二卦(gua)(gua)(gua)(gua)之(zhi)(zhi)(zhi)所象(xiang)，固同為(wei)一陰(yin)(yin)一陽(yang)之(zhi)(zhi)(zhi)合(he)而(er)(er)已(yi)。天(tian)地(di)人(ren)物，莫(mo)非(fei)(fei)陰(yin)(yin)陽(yang)之(zhi)(zhi)(zhi)合(he)而(er)(er)后生者(zhe)，而(er)(er)有(you)(you)(you)(you)所始焉！天(tian)地(di)則(ze)(ze)(ze)最(zui)始也(ye)(ye)。乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)之(zhi)(zhi)(zhi)象(xiang)，純(chun)(chun)陽(yang)純(chun)(chun)陰(yin)(yin)，初未合(he)也(ye)(ye)；而(er)(er)有(you)(you)(you)(you)其(qi)(qi)合(he)者(zhe)在焉！數(shu)(shu)之(zhi)(zhi)(zhi)所含是也(ye)(ye)。乾(qian)(qian)(qian)(qian)卦(gua)(gua)(gua)(gua)六(liu)位，數(shu)(shu)有(you)(you)(you)(you)陰(yin)(yin)陽(yang)；坤(kun)(kun)(kun)卦(gua)(gua)(gua)(gua)亦然(ran)。此(ci)純(chun)(chun)陽(yang)純(chun)(chun)陰(yin)(yin)中(zhong)，已(yi)有(you)(you)(you)(you)其(qi)(qi)所合(he)矣(yi)。然(ran)爻(yao)皆(jie)一也(ye)(ye)，仍視為(wei)未合(he)也(ye)(ye)。若合(he)則(ze)(ze)(ze)爻(yao)變(bian)(bian)(bian)(bian)(bian)矣(yi)。自先天(tian)言(yan)：天(tian)地(di)猶晚(wan)出(chu)(chu)。自后天(tian)言(yan)：乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)乃始成(cheng)(cheng)(cheng)(cheng)(cheng)。而(er)(er)易(yi)(yi)者(zhe)，以(yi)(yi)后天(tian)為(wei)主，故(gu)以(yi)(yi)乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)為(wei)始也(ye)(ye)。乾(qian)(qian)(qian)(qian)建(jian)其(qi)(qi)陽(yang)，坤(kun)(kun)(kun)立其(qi)(qi)陰(yin)(yin)；兩儀并行(xing)，分合(he)以(yi)(yi)成(cheng)(cheng)(cheng)(cheng)(cheng)。此(ci)六(liu)十四(si)卦(gua)(gua)(gua)(gua)，無非(fei)(fei)乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)所出(chu)(chu)也(ye)(ye)。乾(qian)(qian)(qian)(qian)陽(yang)交(jiao)陰(yin)(yin)，其(qi)(qi)變(bian)(bian)(bian)(bian)(bian)有(you)(you)(you)(you)三(san)；坤(kun)(kun)(kun)陰(yin)(yin)交(jiao)陽(yang)，其(qi)(qi)變(bian)(bian)(bian)(bian)(bian)亦三(san)。故(gu)初變(bian)(bian)(bian)(bian)(bian)生六(liu)子(zi)，而(er)(er)八(ba)卦(gua)(gua)(gua)(gua)成(cheng)(cheng)(cheng)(cheng)(cheng)也(ye)(ye)。八(ba)卦(gua)(gua)(gua)(gua)雖出(chu)(chu)于乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)；究為(wei)其(qi)(qi)他各卦(gua)(gua)(gua)(gua)之(zhi)(zhi)(zhi)先世，則(ze)(ze)(ze)以(yi)(yi)三(san)畫之(zhi)(zhi)(zhi)卦(gua)(gua)(gua)(gua)，未合(he)六(liu)位之(zhi)(zhi)(zhi)前；其(qi)(qi)氣猶單，其(qi)(qi)數(shu)(shu)猶簡也(ye)(ye)。然(ran)六(liu)位既成(cheng)(cheng)(cheng)(cheng)(cheng)，八(ba)卦(gua)(gua)(gua)(gua)既合(he)；則(ze)(ze)(ze)六(liu)十四(si)卦(gua)(gua)(gua)(gua)隨之(zhi)(zhi)(zhi)俱(ju)出(chu)(chu)，亦氣數(shu)(shu)自然(ran)而(er)(er)然(ran)者(zhe)。此(ci)六(liu)十四(si)卦(gua)(gua)(gua)(gua)，莫(mo)不奉乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)為(wei)父母(mu)也(ye)(ye)。父母(mu)為(wei)人(ren)生化(hua)(hua)之(zhi)(zhi)(zhi)本(ben)，世代子(zi)孫；均(jun)自此(ci)出(chu)(chu)，則(ze)(ze)(ze)其(qi)(qi)關重要(yao)，抑可知已(yi)！此(ci)圣人(ren)設辭，必(bi)獨詳(xiang)于乾(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)也(ye)(ye)？
且乾(qian)(qian)坤(kun)(kun)(kun)(kun)二(er)(er)卦(gua)(gua)，二(er)(er)猶一也(ye)。以(yi)(yi)(yi)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)變必(bi)(bi)為(wei)(wei)(wei)坤(kun)(kun)(kun)(kun)，坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)變仍為(wei)(wei)(wei)乾(qian)(qian)；循環往復(fu)，始終(zhong)上下；一氣(qi)所(suo)(suo)至(zhi)，則(ze)(ze)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)者(zhe)(zhe)(zhe)；變為(wei)(wei)(wei)坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)；坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)者(zhe)(zhe)(zhe)，變為(wei)(wei)(wei)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)；氣(qi)至(zhi)象(xiang)亦(yi)變也(ye)。乾(qian)(qian)雖為(wei)(wei)(wei)天(tian)(tian)(tian)下大生，而無坤(kun)(kun)(kun)(kun)不(bu)(bu)(bu)見所(suo)(suo)生之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)物(wu)。坤(kun)(kun)(kun)(kun)雖無成(cheng)代終(zhong)，而非(fei)乾(qian)(qian)不(bu)(bu)(bu)得其(qi)(qi)(qi)生成(cheng)。以(yi)(yi)(yi)后(hou)(hou)天(tian)(tian)(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)生化，必(bi)(bi)二(er)(er)氣(qi)交(jiao)至(zhi)也(ye)。故凡乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)德，皆(jie)坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用也(ye)。乾(qian)(qian)德雖廣于(yu)(yu)坤(kun)(kun)(kun)(kun)，非(fei)坤(kun)(kun)(kun)(kun)所(suo)(suo)能承者(zhe)(zhe)(zhe)；則(ze)(ze)人(ren)不(bu)(bu)(bu)見之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，以(yi)(yi)(yi)人(ren)生立(li)在(zai)此土也(ye)；地(di)(di)外(wai)有(you)物(wu)，人(ren)末之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)見也(ye)。即或有(you)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，非(fei)人(ren)所(suo)(suo)當見者(zhe)(zhe)(zhe)，不(bu)(bu)(bu)在(zai)卦(gua)(gua)用之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)內；以(yi)(yi)(yi)卦(gua)(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用，人(ren)為(wei)(wei)(wei)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)主(zhu)也(ye)。人(ren)居天(tian)(tian)(tian)地(di)(di)中(zhong)，遠于(yu)(yu)天(tian)(tian)(tian)，近(jin)于(yu)(yu)地(di)(di)；則(ze)(ze)所(suo)(suo)見者(zhe)(zhe)(zhe)，皆(jie)地(di)(di)所(suo)(suo)載也(ye)。故卦(gua)(gua)以(yi)(yi)(yi)坤(kun)(kun)(kun)(kun)為(wei)(wei)(wei)人(ren)事(shi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)始，而因坤(kun)(kun)(kun)(kun)以(yi)(yi)(yi)孚乾(qian)(qian)；因地(di)(di)以(yi)(yi)(yi)順天(tian)(tian)(tian)道(dao)(dao)也(ye)。故乾(qian)(qian)卦(gua)(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)辭，諄諄于(yu)(yu)人(ren)道(dao)(dao)者(zhe)(zhe)(zhe)，皆(jie)復(fu)見于(yu)(yu)坤(kun)(kun)(kun)(kun)辭焉。坤(kun)(kun)(kun)(kun)雖異乾(qian)(qian)，實即乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)近(jin)象(xiang)也(ye)。乾(qian)(qian)以(yi)(yi)(yi)坤(kun)(kun)(kun)(kun)為(wei)(wei)(wei)形(xing)，而克顯其(qi)(qi)(qi)生成(cheng)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)功；坤(kun)(kun)(kun)(kun)本(ben)(ben)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用，而克成(cheng)其(qi)(qi)(qi)變化之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)德。故論天(tian)(tian)(tian)道(dao)(dao)：乾(qian)(qian)先于(yu)(yu)坤(kun)(kun)(kun)(kun)。論人(ren)事(shi)：坤(kun)(kun)(kun)(kun)切(qie)于(yu)(yu)乾(qian)(qian)。以(yi)(yi)(yi)后(hou)(hou)天(tian)(tian)(tian)：形(xing)著而氣(qi)難見，象(xiang)明而數不(bu)(bu)(bu)易(yi)知也(ye)。蓋坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用，即人(ren)道(dao)(dao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)本(ben)(ben)；亦(yi)人(ren)道(dao)(dao)合天(tian)(tian)(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)途(tu)徑也(ye)。故人(ren)道(dao)(dao)備于(yu)(yu)乾(qian)(qian)，而徵于(yu)(yu)坤(kun)(kun)(kun)(kun)。此圣(sheng)人(ren)立(li)教，以(yi)(yi)(yi)坤(kun)(kun)(kun)(kun)繼(ji)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)微意(yi)也(ye)。不(bu)(bu)(bu)然(ran)，由乾(qian)(qian)至(zhi)坤(kun)(kun)(kun)(kun)，其(qi)(qi)(qi)道(dao)(dao)遠矣！先天(tian)(tian)(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)位，可以(yi)(yi)(yi)引證也(ye)；若后(hou)(hou)天(tian)(tian)(tian)八卦(gua)(gua)則(ze)(ze)異是。后(hou)(hou)天(tian)(tian)(tian)者(zhe)(zhe)(zhe)，既(ji)變之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)象(xiang)，故坎離代乾(qian)(qian)坤(kun)(kun)(kun)(kun)，為(wei)(wei)(wei)九宮之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)次，非(fei)復(fu)前兩儀四象(xiang)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)序(xu)也(ye)。變者(zhe)(zhe)(zhe)以(yi)(yi)(yi)用為(wei)(wei)(wei)主(zhu)，故不(bu)(bu)(bu)求其(qi)(qi)(qi)體(ti)。周易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)序(xu)，亦(yi)以(yi)(yi)(yi)用為(wei)(wei)(wei)主(zhu)，其(qi)(qi)(qi)先后(hou)(hou)皆(jie)依動變為(wei)(wei)(wei)次，不(bu)(bu)(bu)似(si)前之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)有(you)一定統(tong)(tong)系(xi)也(ye)。然(ran)動變亦(yi)自有(you)其(qi)(qi)(qi)統(tong)(tong)系(xi)，蓋準(zhun)一陰一陽之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)，相得有(you)合之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)義而生者(zhe)(zhe)(zhe)，乾(qian)(qian)坤(kun)(kun)(kun)(kun)相次，即此意(yi)也(ye)。
夫乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)二(er)卦(gua)(gua)相交成(cheng)用(yong)(yong)(yong)(yong)(yong)(yong)，相應(ying)成(cheng)變(bian)(bian)(bian)；相參伍錯綜以(yi)成(cheng)生(sheng)(sheng)化，則其為(wei)(wei)德(de)，不在(zai)(zai)各卦(gua)(gua)本(ben)爻(yao)(yao)(yao)(yao)已耳。卦(gua)(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)，有(you)四象(xiang)，有(you)三世，皆相通(tong)也(ye)(ye)(ye)(ye)(ye)。乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)極為(wei)(wei)坤(kun)(kun)，坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)極為(wei)(wei)乾(qian)(qian)(qian)(qian)(qian)。雖六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)中，自成(cheng)乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)；而(er)(er)(er)(er)六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)外，有(you)乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)坤(kun)(kun)。坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)乾(qian)(qian)(qian)(qian)(qian)，兩(liang)相印對(dui)者(zhe)也(ye)(ye)(ye)(ye)(ye)。故六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)上即(ji)變(bian)(bian)(bian)矣，爻(yao)(yao)(yao)(yao)變(bian)(bian)(bian)而(er)(er)(er)(er)卦(gua)(gua)未(wei)變(bian)(bian)(bian)。蓋(gai)必六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)全(quan)變(bian)(bian)(bian)，乃為(wei)(wei)卦(gua)(gua)變(bian)(bian)(bian)。則所謂乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)坤(kun)(kun)者(zhe)。乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)變(bian)(bian)(bian)坤(kun)(kun)，非坤(kun)(kun)卦(gua)(gua)也(ye)(ye)(ye)(ye)(ye)。所變(bian)(bian)(bian)者(zhe)爻(yao)(yao)(yao)(yao)耳！坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)乾(qian)(qian)(qian)(qian)(qian)亦然(ran)。乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)爻(yao)(yao)(yao)(yao)名陽(yang)而(er)(er)(er)(er)數(shu)九(jiu)(jiu)(jiu)，坤(kun)(kun)爻(yao)(yao)(yao)(yao)名陰(yin)而(er)(er)(er)(er)數(shu)六(liu)(liu)(liu)。其變(bian)(bian)(bian)也(ye)(ye)(ye)(ye)(ye)，九(jiu)(jiu)(jiu)六(liu)(liu)(liu)易耳，陰(yin)陽(yang)換耳。故六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)卦(gua)(gua)，自具其變(bian)(bian)(bian)；而(er)(er)(er)(er)乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)，自有(you)六(liu)(liu)(liu)存；坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)，自有(you)九(jiu)(jiu)(jiu)在(zai)(zai)。何以(yi)見(jian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，則用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)二(er)爻(yao)(yao)(yao)(yao)辭是也(ye)(ye)(ye)(ye)(ye)。用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)在(zai)(zai)上九(jiu)(jiu)(jiu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)外，用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)在(zai)(zai)上六(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)余；爻(yao)(yao)(yao)(yao)位(wei)既無(wu)，象(xiang)辭奚(xi)具，而(er)(er)(er)(er)竟有(you)此象(xiang)此辭者(zhe)，則可以(yi)知所指為(wei)(wei)變(bian)(bian)(bian)爻(yao)(yao)(yao)(yao)也(ye)(ye)(ye)(ye)(ye)。乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)在(zai)(zai)卦(gua)(gua)，本(ben)為(wei)(wei)獨立(li)；而(er)(er)(er)(er)后天(tian)不得獨立(li)者(zhe)？以(yi)生(sheng)(sheng)成(cheng)萬(wan)物(wu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)本(ben)，在(zai)(zai)乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)也(ye)(ye)(ye)(ye)(ye)；不得獨立(li)，必有(you)與合(he)(he)；則乾(qian)(qian)(qian)(qian)(qian)必合(he)(he)坤(kun)(kun)，坤(kun)(kun)必合(he)(he)乾(qian)(qian)(qian)(qian)(qian)，合(he)(he)而(er)(er)(er)(er)后共用(yong)(yong)(yong)(yong)(yong)(yong)見(jian)。此用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)、用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)名，特(te)以(yi)用(yong)(yong)(yong)(yong)(yong)(yong)稱也(ye)(ye)(ye)(ye)(ye)。用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)、乃乾(qian)(qian)(qian)(qian)(qian)合(he)(he)坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)(yong)(yong)；用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)、乃坤(kun)(kun)合(he)(he)乾(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)(yong)(yong)。乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)大(da)用(yong)(yong)(yong)(yong)(yong)(yong)，乃在(zai)(zai)六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)外矣。然(ran)九(jiu)(jiu)(jiu)者(zhe)，乾(qian)(qian)(qian)(qian)(qian)爻(yao)(yao)(yao)(yao)也(ye)(ye)(ye)(ye)(ye)。六(liu)(liu)(liu)者(zhe)，坤(kun)(kun)爻(yao)(yao)(yao)(yao)也(ye)(ye)(ye)(ye)(ye)。雖在(zai)(zai)六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)外，仍不出本(ben)卦(gua)(gua)；則象(xiang)有(you)限(xian)，而(er)(er)(er)(er)氣(qi)無(wu)止境，位(wei)有(you)盡，而(er)(er)(er)(er)用(yong)(yong)(yong)(yong)(yong)(yong)無(wu)窮(qiong)期。此天(tian)地之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)異乎萬(wan)物(wu)，而(er)(er)(er)(er)乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)殊于他卦(gua)(gua)也(ye)(ye)(ye)(ye)(ye)。陽(yang)氣(qi)偏行，陰(yin)器偏承.二(er)五構精，妙合(he)(he)而(er)(er)(er)(er)凝。此用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)，為(wei)(wei)天(tian)下大(da)用(yong)(yong)(yong)(yong)(yong)(yong)，生(sheng)(sheng)化之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)本(ben)也(ye)(ye)(ye)(ye)(ye)。生(sheng)(sheng)化無(wu)盡，天(tian)地不與焉(yan)！德(de)用(yong)(yong)(yong)(yong)(yong)(yong)無(wu)窮(qiong)，乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)不動(dong)焉(yan)！故大(da)用(yong)(yong)(yong)(yong)(yong)(yong)在(zai)(zai)六(liu)(liu)(liu)爻(yao)(yao)(yao)(yao)外，乾(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)末嘗(chang)變(bian)(bian)(bian)也(ye)(ye)(ye)(ye)(ye)。
且乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)與坤(kun)(kun)(kun)，為(wei)(wei)(wei)全(quan)(quan)易之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)本。無(wu)(wu)論何卦(gua)(gua)(gua)，莫非由乾(qian)(qian)坤(kun)(kun)(kun)交(jiao)合(he)變(bian)化而(er)(er)成。六(liu)(liu)(liu)(liu)十(shi)四(si)卦(gua)(gua)(gua)，莫非用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)(jiu)、用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)見(jian)也(ye)(ye)(ye)(ye)。則(ze)用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)(jiu)用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)(liu)，不(bu)獨(du)(du)為(wei)(wei)(wei)乾(qian)(qian)坤(kun)(kun)(kun)二(er)卦(gua)(gua)(gua)所(suo)(suo)有；乃六(liu)(liu)(liu)(liu)十(shi)四(si)卦(gua)(gua)(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)共(gong)也(ye)(ye)(ye)(ye)。蓋(gai)卦(gua)(gua)(gua)不(bu)離陰(yin)(yin)陽(yang)(yang)(yang)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)氣，奇偶(ou)(ou)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)數(shu)；則(ze)萬(wan)物原一(yi)體(ti)，萬(wan)用(yong)(yong)(yong)(yong)(yong)(yong)原一(yi)致(zhi)。用(yong)(yong)(yong)(yong)(yong)(yong)陽(yang)(yang)(yang)者(zhe)，必用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)(jiu)。用(yong)(yong)(yong)(yong)(yong)(yong)陰(yin)(yin)者(zhe)，必用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)(liu)；不(bu)以乾(qian)(qian)坤(kun)(kun)(kun)限也(ye)(ye)(ye)(ye)。各(ge)得(de)乾(qian)(qian)坤(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)一(yi)耳(er)。萬(wan)物各(ge)殊其生，而(er)(er)莫不(bu)得(de)天(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)一(yi)體(ti)；余卦(gua)(gua)(gua)各(ge)異(yi)其象(xiang)，而(er)(er)莫不(bu)得(de)乾(qian)(qian)坤(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)一(yi)體(ti)。故(gu)(gu)(gu)卦(gua)(gua)(gua)有異(yi)名，爻無(wu)(wu)異(yi)稱(cheng)。陽(yang)(yang)(yang)皆九(jiu)(jiu)(jiu)(jiu)，陰(yin)(yin)皆六(liu)(liu)(liu)(liu)。則(ze)九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)即各(ge)卦(gua)(gua)(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)精(jing)魂(hun)，而(er)(er)用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)(jiu)、用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)(liu)；亦各(ge)卦(gua)(gua)(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)德用(yong)(yong)(yong)(yong)(yong)(yong)。所(suo)(suo)謂(wei)一(yi)陰(yin)(yin)一(yi)陽(yang)(yang)(yang)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)，終(zhong)始一(yi)致(zhi)。乾(qian)(qian)始之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，坤(kun)(kun)(kun)終(zhong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。在(zai)其間者(zhe)，不(bu)得(de)外斯道(dao)也(ye)(ye)(ye)(ye)。故(gu)(gu)(gu)乾(qian)(qian)交(jiao)坤(kun)(kun)(kun)，坤(kun)(kun)(kun)合(he)乾(qian)(qian)；自成其德用(yong)(yong)(yong)(yong)(yong)(yong)，不(bu)為(wei)(wei)(wei)萬(wan)物，而(er)(er)萬(wan)物皆受(shou)其德，化其用(yong)(yong)(yong)(yong)(yong)(yong)；此所(suo)(suo)以為(wei)(wei)(wei)大也(ye)(ye)(ye)(ye)。以一(yi)用(yong)(yong)(yong)(yong)(yong)(yong)而(er)(er)通天(tian)(tian)下(xia)，至(zhi)于(yu)無(wu)(wu)盡；唯道(dao)方之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，故(gu)(gu)(gu)曰道(dao)。道(dao)貫于(yu)氣，外見(jian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)于(yu)理；內存之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)于(yu)性(xing)。無(wu)(wu)不(bu)同(tong)此理，同(tong)此性(xing)，則(ze)無(wu)(wu)不(bu)同(tong)此德，同(tong)此用(yong)(yong)(yong)(yong)(yong)(yong)也(ye)(ye)(ye)(ye)。故(gu)(gu)(gu)道(dao)能通一(yi)切，而(er)(er)用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)(jiu)、用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)(liu)，能通全(quan)(quan)易。全(quan)(quan)易用(yong)(yong)(yong)(yong)(yong)(yong)雖無(wu)(wu)窮，未嘗(chang)出(chu)(chu)乎乾(qian)(qian)坤(kun)(kun)(kun)九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)(yong)(yong)也(ye)(ye)(ye)(ye)。前(qian)乎九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)者(zhe)，必以九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)為(wei)(wei)(wei)歸；后乎九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)者(zhe)，必以九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)為(wei)(wei)(wei)本，九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)蓋(gai)數(shu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)總樞(shu)也(ye)(ye)(ye)(ye)。天(tian)(tian)地(di)系焉！日月行焉！人物生息變(bian)化焉！事業成敗出(chu)(chu)入焉！是曰：中(zhong)極(ji)(ji)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)地(di)，而(er)(er)生死之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)門也(ye)(ye)(ye)(ye)。故(gu)(gu)(gu)陽(yang)(yang)(yang)極(ji)(ji)于(yu)九(jiu)(jiu)(jiu)(jiu)，陰(yin)(yin)老于(yu)六(liu)(liu)(liu)(liu)。陰(yin)(yin)陽(yang)(yang)(yang)往復(fu)，不(bu)出(chu)(chu)九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)途。氣數(shu)變(bian)遷，不(bu)離九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)鑰：居(ju)造(zao)化之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)中(zhong)，司二(er)氣之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)鈞衡，五行之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)稟(bing)龠也(ye)(ye)(ye)(ye)。天(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)數(shu)：共(gong)五十(shi)五，九(jiu)(jiu)(jiu)(jiu)六(liu)(liu)(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)乘五十(shi)四(si)。所(suo)(suo)差者(zhe)，不(bu)用(yong)(yong)(yong)(yong)(yong)(yong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)數(shu)，原數(shu)也(ye)(ye)(ye)(ye)；末(mo)化之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)元(yuan)也(ye)(ye)(ye)(ye)。故(gu)(gu)(gu)非后天(tian)(tian)所(suo)(suo)用(yong)(yong)(yong)(yong)(yong)(yong)，有數(shu)無(wu)(wu)名，有名無(wu)(wu)象(xiang)；為(wei)(wei)(wei)道(dao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)先(xian)，易之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)末(mo)立也(ye)(ye)(ye)(ye)。故(gu)(gu)(gu)易立于(yu)二(er)，一(yi)陰(yin)(yin)一(yi)陽(yang)(yang)(yang)，是謂(wei)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)二(er)。由二(er)成四(si)，由四(si)成八(ba)；由八(ba)進(jin)而(er)(er)至(zhi)六(liu)(liu)(liu)(liu)十(shi)四(si)，莫非二(er)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)為(wei)(wei)(wei)，二(er)者(zhe)：偶(ou)(ou)也(ye)(ye)(ye)(ye)。有偶(ou)(ou)始生，有合(he)始成，故(gu)(gu)(gu)易不(bu)孤立，數(shu)不(bu)獨(du)(du)用(yong)(yong)(yong)(yong)(yong)(yong)。用(yong)(yong)(yong)(yong)(yong)(yong)九(jiu)(jiu)(jiu)(jiu)用(yong)(yong)(yong)(yong)(yong)(yong)六(liu)(liu)(liu)(liu)，亦相須而(er)(er)行，非獨(du)(du)用(yong)(yong)(yong)(yong)(yong)(yong)也(ye)(ye)(ye)(ye)。
要知(zhi)后天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)物，必(bi)以(yi)(yi)陰(yin)(yin)(yin)陽(yang)相偶(ou)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)用(yong)；陽(yang)者(zhe)(zhe)(zhe)以(yi)(yi)陰(yin)(yin)(yin)用(yong)，陰(yin)(yin)(yin)者(zhe)(zhe)(zhe)以(yi)(yi)陽(yang)用(yong)。此定序(xu)也(ye)(ye)，亦理也(ye)(ye)，數也(ye)(ye)。違此者(zhe)(zhe)(zhe)，不(bu)(bu)(bu)(bu)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)用(yong)，且害(hai)至(zhi)(zhi)；為(wei)(wei)共(gong)始(shi)(shi)終(zhong)不(bu)(bu)(bu)(bu)全(quan)(quan)(quan)，剛柔失(shi)(shi)中(zhong)；則(ze)(ze)(ze)乖(guai)太(tai)和之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)(dao)(dao)也(ye)(ye)。故(gu)陽(yang)體陰(yin)(yin)(yin)用(yong)，陰(yin)(yin)(yin)體陽(yang)用(yong)；相調相濟，是曰：道(dao)(dao)(dao)(dao)行(xing)(xing)。如(ru)剛甚必(bi)折，柔甚必(bi)屈；有(you)始(shi)(shi)無終(zhong)，有(you)終(zhong)失(shi)(shi)始(shi)(shi)。皆(jie)害(hai)道(dao)(dao)(dao)(dao)也(ye)(ye)。天(tian)地(di)尚(shang)不(bu)(bu)(bu)(bu)孤行(xing)(xing)，況其(qi)下(xia)乎？故(gu)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)于(yu)(yu)(yu)坤(kun)(kun)，坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)于(yu)(yu)(yu)乾(qian)(qian)；而(er)乾(qian)(qian)坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)合(he)，則(ze)(ze)(ze)全(quan)(quan)(quan)德(de)(de)(de)矣。乾(qian)(qian)有(you)四德(de)(de)(de)，坤(kun)(kun)亦如(ru)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)；而(er)所先不(bu)(bu)(bu)(bu)同(tong)，所至(zhi)(zhi)不(bu)(bu)(bu)(bu)同(tong)。則(ze)(ze)(ze)知(zhi)四德(de)(de)(de)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)，必(bi)二卦之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)合(he)也(ye)(ye)。故(gu)乾(qian)(qian)上坤(kun)(kun)下(xia)；乾(qian)(qian)外坤(kun)(kun)內，一陰(yin)(yin)(yin)一陽(yang)，乃見天(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)(dao)(dao)。若失(shi)(shi)一，則(ze)(ze)(ze)皆(jie)失(shi)(shi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。此性(xing)情之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)喻，德(de)(de)(de)業之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)說(shuo)也(ye)(ye)。人(ren)(ren)(ren)(ren)(ren)以(yi)(yi)全(quan)(quan)(quan)德(de)(de)(de)，亦如(ru)乾(qian)(qian)坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)合(he)。故(gu)內外兼至(zhi)(zhi)，道(dao)(dao)(dao)(dao)德(de)(de)(de)并立(li)；乃為(wei)(wei)君子，乃稱(cheng)大人(ren)(ren)(ren)(ren)(ren)；以(yi)(yi)其(qi)明明德(de)(de)(de)而(er)止至(zhi)(zhi)善。內立(li)其(qi)誠，外致其(qi)德(de)(de)(de)，中(zhong)有(you)所守也(ye)(ye)；則(ze)(ze)(ze)物不(bu)(bu)(bu)(bu)害(hai)身，行(xing)(xing)有(you)所立(li)也(ye)(ye)；則(ze)(ze)(ze)性(xing)不(bu)(bu)(bu)(bu)背道(dao)(dao)(dao)(dao)，人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)以(yi)(yi)道(dao)(dao)(dao)(dao)稱(cheng)者(zhe)(zhe)(zhe)，即由于(yu)(yu)(yu)本末始(shi)(shi)終(zhong)不(bu)(bu)(bu)(bu)去道(dao)(dao)(dao)(dao)也(ye)(ye)。道(dao)(dao)(dao)(dao)賅(gai)上下(xia)，備(bei)形神；未有(you)偏而(er)名道(dao)(dao)(dao)(dao)者(zhe)(zhe)(zhe)，則(ze)(ze)(ze)人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)行(xing)(xing)不(bu)(bu)(bu)(bu)全(quan)(quan)(quan)者(zhe)(zhe)(zhe)；乃悖生生之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)則(ze)(ze)(ze)也(ye)(ye)。故(gu)乾(qian)(qian)坤(kun)(kun)大用(yong)，合(he)而(er)為(wei)(wei)天(tian)地(di)大德(de)(de)(de)；賦于(yu)(yu)(yu)人(ren)(ren)(ren)(ren)(ren)，為(wei)(wei)人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)至(zhi)(zhi)德(de)(de)(de)，人(ren)(ren)(ren)(ren)(ren)皆(jie)本此大用(yong)；以(yi)(yi)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)道(dao)(dao)(dao)(dao)達德(de)(de)(de)，斯稱(cheng)三才(cai)(cai)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)名。三才(cai)(cai)雖三，合(he)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)則(ze)(ze)(ze)一；一于(yu)(yu)(yu)道(dao)(dao)(dao)(dao)耳！而(er)徵于(yu)(yu)(yu)人(ren)(ren)(ren)(ren)(ren)。故(gu)用(yong)九(jiu)(jiu)用(yong)六(liu)(liu)，人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)也(ye)(ye)。人(ren)(ren)(ren)(ren)(ren)用(yong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)以(yi)(yi)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)其(qi)德(de)(de)(de)，以(yi)(yi)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)其(qi)位育；而(er)后與(yu)天(tian)地(di)參。此圣人(ren)(ren)(ren)(ren)(ren)立(li)象設辭之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)本旨也(ye)(ye)。故(gu)六(liu)(liu)爻以(yi)(yi)人(ren)(ren)(ren)(ren)(ren)爻居中(zhong)位，各辭以(yi)(yi)人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)(dao)(dao)建中(zhong)極(ji)。所謂善、惡、吉、兇(xiong)、福(fu)、禍、悔、咎者(zhe)(zhe)(zhe)，皆(jie)人(ren)(ren)(ren)(ren)(ren)受之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)；則(ze)(ze)(ze)易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)大用(yong)，人(ren)(ren)(ren)(ren)(ren)外將(jiang)安(an)用(yong)，人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)易(yi)，亦自(zi)乾(qian)(qian)坤(kun)(kun)九(jiu)(jiu)六(liu)(liu)始(shi)(shi)。九(jiu)(jiu)六(liu)(liu)為(wei)(wei)二氣之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)極(ji)，即人(ren)(ren)(ren)(ren)(ren)事(shi)消息(xi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)(dao)(dao)也(ye)(ye)。人(ren)(ren)(ren)(ren)(ren)用(yong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，大則(ze)(ze)(ze)平治(zhi)，小(xiao)則(ze)(ze)(ze)誠正；內而(er)性(xing)情，外而(er)德(de)(de)(de)業。莫(mo)離乎九(jiu)(jiu)六(liu)(liu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)數也(ye)(ye)。故(gu)陰(yin)(yin)(yin)陽(yang)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)(dao)(dao)，實備(bei)于(yu)(yu)(yu)一人(ren)(ren)(ren)(ren)(ren)，而(er)乾(qian)(qian)坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)，實存于(yu)(yu)(yu)一心(xin)。此心(xin)無孤立(li)，無獨行(xing)(xing)。此身有(you)窮通，有(you)賢否？皆(jie)相須(xu)而(er)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)者(zhe)(zhe)(zhe)，亦猶(you)乾(qian)(qian)與(yu)坤(kun)(kun)也(ye)(ye)。
乾(qian)(qian)(qian)坤之(zhi)(zhi)(zhi)(zhi)象，最(zui)大者(zhe)天(tian)地(di)；而(er)最(zui)近者(zhe)即(ji)性(xing)(xing)(xing)(xing)(xing)(xing)情(qing)(qing)也(ye)(ye)。以(yi)物喻(yu)之(zhi)(zhi)(zhi)(zhi)，凡(fan)男女雌雄，神形道(dao)(dao)(dao)(dao)(dao)器(qi)之(zhi)(zhi)(zhi)(zhi)類，皆(jie)可(ke)象乾(qian)(qian)(qian)坤；而(er)最(zui)微妙，又切近者(zhe)，實猶人心中(zhong)性(xing)(xing)(xing)(xing)(xing)(xing)情(qing)(qing)也(ye)(ye)。性(xing)(xing)(xing)(xing)(xing)(xing)情(qing)(qing)一(yi)物二名，性(xing)(xing)(xing)(xing)(xing)(xing)不(bu)可(ke)見，而(er)見于情(qing)(qing)。情(qing)(qing)秉于性(xing)(xing)(xing)(xing)(xing)(xing)，而(er)有欲；故中(zhong)庸此之(zhi)(zhi)(zhi)(zhi)中(zhong)和。中(zhong)者(zhe)，性(xing)(xing)(xing)(xing)(xing)(xing)之(zhi)(zhi)(zhi)(zhi)體。和者(zhe)，情(qing)(qing)之(zhi)(zhi)(zhi)(zhi)正(zheng)。人之(zhi)(zhi)(zhi)(zhi)修(xiu)道(dao)(dao)(dao)(dao)(dao)者(zhe)，必(bi)致(zhi)(zhi)力(li)中(zhong)和。故重在(zai)養(yang)性(xing)(xing)(xing)(xing)(xing)(xing)適情(qing)(qing)；乾(qian)(qian)(qian)辭(ci)亦曰：乾(qian)(qian)(qian)道(dao)(dao)(dao)(dao)(dao)變化，各(ge)正(zheng)性(xing)(xing)(xing)(xing)(xing)(xing)命；保合(he)太(tai)和，乃利(li)(li)貞。利(li)(li)貞者(zhe)，性(xing)(xing)(xing)(xing)(xing)(xing)情(qing)(qing)也(ye)(ye)。傳曰：一(yi)陰一(yi)陽(yang)之(zhi)(zhi)(zhi)(zhi)謂(wei)道(dao)(dao)(dao)(dao)(dao)，繼(ji)之(zhi)(zhi)(zhi)(zhi)者(zhe)善(shan)也(ye)(ye)，成之(zhi)(zhi)(zhi)(zhi)者(zhe)性(xing)(xing)(xing)(xing)(xing)(xing)也(ye)(ye)。是皆(jie)足以(yi)明(ming)圣人乾(qian)(qian)(qian)坤喻(yu)性(xing)(xing)(xing)(xing)(xing)(xing)情(qing)(qing)之(zhi)(zhi)(zhi)(zhi)旨。蓋乾(qian)(qian)(qian)純陽(yang)無物；人之(zhi)(zhi)(zhi)(zhi)性(xing)(xing)(xing)(xing)(xing)(xing)也(ye)(ye)。坤純陰有守，人之(zhi)(zhi)(zhi)(zhi)情(qing)(qing)也(ye)(ye)。茍求性(xing)(xing)(xing)(xing)(xing)(xing)情(qing)(qing)之(zhi)(zhi)(zhi)(zhi)正(zheng)，得中(zhong)和之(zhi)(zhi)(zhi)(zhi)道(dao)(dao)(dao)(dao)(dao)；必(bi)于二卦悟之(zhi)(zhi)(zhi)(zhi)，不(bu)獨象也(ye)(ye)，辭(ci)亦備焉(yan)。而(er)人之(zhi)(zhi)(zhi)(zhi)修(xiu)養(yang)，尤必(bi)效(xiao)乾(qian)(qian)(qian)坤之(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)；以(yi)乾(qian)(qian)(qian)變坤，以(yi)坤復乾(qian)(qian)(qian)；循環之(zhi)(zhi)(zhi)(zhi)間(jian)，始終俱至(zhi)；而(er)后性(xing)(xing)(xing)(xing)(xing)(xing)道(dao)(dao)(dao)(dao)(dao)全，德(de)行立矣。故道(dao)(dao)(dao)(dao)(dao)家在(zai)先天(tian)，必(bi)取法乾(qian)(qian)(qian)坤：以(yi)其行于不(bu)息，成于安貞，純乎內(nei)功也(ye)(ye)。內(nei)功誠也(ye)(ye)，誠則(ze)明(ming)矣。此明(ming)德(de)必(bi)止(zhi)善(shan)也(ye)(ye)；而(er)靜字概(gai)括之(zhi)(zhi)(zhi)(zhi)矣！乾(qian)(qian)(qian)生(sheng)而(er)不(bu)動(dong)，坤動(dong)而(er)不(bu)生(sheng)；乾(qian)(qian)(qian)為(wei)坤生(sheng)，本不(bu)易也(ye)(ye)。坤為(wei)乾(qian)(qian)(qian)用(yong)(yong)(yong)(yong)，德(de)不(bu)乖也(ye)(ye)。故性(xing)(xing)(xing)(xing)(xing)(xing)為(wei)情(qing)(qing)所依，情(qing)(qing)為(wei)性(xing)(xing)(xing)(xing)(xing)(xing)之(zhi)(zhi)(zhi)(zhi)用(yong)(yong)(yong)(yong)；情(qing)(qing)不(bu)違性(xing)(xing)(xing)(xing)(xing)(xing)，則(ze)太(tai)和存焉(yan)！性(xing)(xing)(xing)(xing)(xing)(xing)不(bu)失情(qing)(qing)，則(ze)大中(zhong)建焉(yan)！此誠為(wei)人生(sheng)至(zhi)行，亦人道(dao)(dao)(dao)(dao)(dao)至(zhi)教(jiao)(jiao)；易象本古圣立教(jiao)(jiao)之(zhi)(zhi)(zhi)(zhi)作，而(er)首著之(zhi)(zhi)(zhi)(zhi)乾(qian)(qian)(qian)坤。即(ji)爻象觀之(zhi)(zhi)(zhi)(zhi)，亦可(ke)得其妙諦(di)；以(yi)奇偶交用(yong)(yong)(yong)(yong)，上(shang)下相抱，內(nei)外互應；中(zhong)位(wei)不(bu)失，足以(yi)知所致(zhi)(zhi)力(li)矣！則(ze)用(yong)(yong)(yong)(yong)九(jiu)用(yong)(yong)(yong)(yong)六之(zhi)(zhi)(zhi)(zhi)義，豈獨及于事物已(yi)哉！
乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)二卦(gua)，以(yi)(yi)(yi)相交(jiao)(jiao)成(cheng)(cheng)(cheng)(cheng)用(yong)，以(yi)(yi)(yi)變(bian)化(hua)(hua)(hua)(hua)(hua)成(cheng)(cheng)(cheng)(cheng)易(yi)。周易(yi)全象(xiang)(xiang)，皆自二卦(gua)參伍錯綜而(er)(er)(er)成(cheng)(cheng)(cheng)(cheng)。其(qi)(qi)(qi)卦(gua)交(jiao)(jiao)為坎(kan)(kan)(kan)離(li)(li)(li)(li)，以(yi)(yi)(yi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)交(jiao)(jiao)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)成(cheng)(cheng)(cheng)(cheng)坎(kan)(kan)(kan)，坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)交(jiao)(jiao)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)成(cheng)(cheng)(cheng)(cheng)離(li)(li)(li)(li)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)用(yong)見(jian)(jian)(jian)乎離(li)(li)(li)(li)，坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)用(yong)見(jian)(jian)(jian)乎坎(kan)(kan)(kan)，離(li)(li)(li)(li)坎(kan)(kan)(kan)即乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)也(ye)。其(qi)(qi)(qi)卦(gua)爻交(jiao)(jiao)錯而(er)(er)(er)為咸(xian)(xian)恒(heng)(heng)，咸(xian)(xian)主(zhu)(zhu)乎上，恒(heng)(heng)行于(yu)下，咸(xian)(xian)恒(heng)(heng)亦(yi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)也(ye)。其(qi)(qi)(qi)爻相交(jiao)(jiao)為既(ji)(ji)(ji)末(mo)(mo)濟，乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)下交(jiao)(jiao)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)為既(ji)(ji)(ji)濟。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)上復(fu)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)為未(wei)濟，既(ji)(ji)(ji)未(wei)濟亦(yi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)也(ye)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)半交(jiao)(jiao)為泰(tai)否(fou)，泰(tai)為交(jiao)(jiao)而(er)(er)(er)合(he)(he)。否(fou)為分(fen)(fen)(fen)(fen)而(er)(er)(er)塞，泰(tai)否(fou)亦(yi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)也(ye)。此(ci)其(qi)(qi)(qi)變(bian)，皆自乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)來，而(er)(er)(er)卦(gua)爻有(you)異耳！故(gu)(gu)周易(yi)上經，始(shi)(shi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)，終(zhong)坎(kan)(kan)(kan)離(li)(li)(li)(li)。下經始(shi)(shi)咸(xian)(xian)恒(heng)(heng)，終(zhong)既(ji)(ji)(ji)未(wei)濟。而(er)(er)(er)以(yi)(yi)(yi)泰(tai)否(fou)分(fen)(fen)(fen)(fen)合(he)(he)其(qi)(qi)(qi)間，以(yi)(yi)(yi)明天地(di)大(da)(da)(da)開合(he)(he)，宇(yu)宙大(da)(da)(da)始(shi)(shi)終(zhong)也(ye)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)主(zhu)(zhu)大(da)(da)(da)始(shi)(shi)，而(er)(er)(er)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)主(zhu)(zhu)代(dai)(dai)終(zhong)；故(gu)(gu)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)起至(zhi)(zhi)末(mo)(mo)濟止。未(wei)濟之(zhi)(zhi)(zhi)(zhi)窮，即坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)大(da)(da)(da)終(zhong)也(ye)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)雖交(jiao)(jiao)而(er)(er)(er)氣(qi)絕(jue)，故(gu)(gu)從坎(kan)(kan)(kan)離(li)(li)(li)(li)之(zhi)(zhi)(zhi)(zhi)象(xiang)(xiang)。坎(kan)(kan)(kan)離(li)(li)(li)(li)者(zhe)(zhe)，后(hou)(hou)天之(zhi)(zhi)(zhi)(zhi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)也(ye)，交(jiao)(jiao)則(ze)(ze)(ze)(ze)生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)成(cheng)(cheng)(cheng)(cheng)；分(fen)(fen)(fen)(fen)則(ze)(ze)(ze)(ze)人(ren)物盡。末(mo)(mo)濟以(yi)(yi)(yi)離(li)(li)(li)(li)坎(kan)(kan)(kan)分(fen)(fen)(fen)(fen)道，而(er)(er)(er)世(shi)界大(da)(da)(da)終(zhong)；以(yi)(yi)(yi)見(jian)(jian)(jian)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)不(bu)交(jiao)(jiao)，而(er)(er)(er)生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)遂止。未(wei)濟雖三陽三陰(yin)，相間成(cheng)(cheng)(cheng)(cheng)卦(gua)；實則(ze)(ze)(ze)(ze)陰(yin)陽離(li)(li)(li)(li)散，乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)背道之(zhi)(zhi)(zhi)(zhi)象(xiang)(xiang)也(ye)。故(gu)(gu)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)大(da)(da)(da)用(yong)，必陰(yin)陽交(jiao)(jiao)合(he)(he)，而(er)(er)(er)后(hou)(hou)天生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)；必水火(huo)互(hu)濟，此(ci)一(yi)定不(bu)移之(zhi)(zhi)(zhi)(zhi)理也(ye)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)雖為大(da)(da)(da)始(shi)(shi)，非坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)不(bu)見(jian)(jian)(jian)其(qi)(qi)(qi)功。故(gu)(gu)見(jian)(jian)(jian)其(qi)(qi)(qi)用(yong)于(yu)坎(kan)(kan)(kan)。坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)雖為代(dai)(dai)終(zhong)，非乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)不(bu)成(cheng)(cheng)(cheng)(cheng)其(qi)(qi)(qi)德，故(gu)(gu)見(jian)(jian)(jian)其(qi)(qi)(qi)用(yong)于(yu)離(li)(li)(li)(li)。離(li)(li)(li)(li)坎(kan)(kan)(kan)之(zhi)(zhi)(zhi)(zhi)代(dai)(dai)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)，實乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)所(suo)自化(hua)(hua)(hua)(hua)(hua)也(ye)。參伍錯綜，人(ren)物以(yi)(yi)(yi)生(sheng)(sheng)(sheng)，威恒(heng)(heng)乃成(cheng)(cheng)(cheng)(cheng)。咸(xian)(xian)恒(heng)(heng)為長、兌(dui)、震、巽、四卦(gua)之(zhi)(zhi)(zhi)(zhi)交(jiao)(jiao)合(he)(he)；亦(yi)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)所(suo)生(sheng)(sheng)(sheng)，坎(kan)(kan)(kan)離(li)(li)(li)(li)之(zhi)(zhi)(zhi)(zhi)所(suo)出也(ye)。故(gu)(gu)咸(xian)(xian)恒(heng)(heng)為人(ren)物最(zui)繁盛之(zhi)(zhi)(zhi)(zhi)象(xiang)(xiang)，亦(yi)天地(di)生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)最(zui)茂育之(zhi)(zhi)(zhi)(zhi)時(shi)；實后(hou)(hou)天中最(zui)得氣(qi)之(zhi)(zhi)(zhi)(zhi)際。故(gu)(gu)下經以(yi)(yi)(yi)之(zhi)(zhi)(zhi)(zhi)始(shi)(shi)，明乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)大(da)(da)(da)用(yong)之(zhi)(zhi)(zhi)(zhi)成(cheng)(cheng)(cheng)(cheng)也(ye)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)既(ji)(ji)(ji)屬二體，本有(you)分(fen)(fen)(fen)(fen)合(he)(he)；分(fen)(fen)(fen)(fen)則(ze)(ze)(ze)(ze)否(fou)塞，合(he)(he)則(ze)(ze)(ze)(ze)泰(tai)亨。此(ci)泰(tai)否(fou)之(zhi)(zhi)(zhi)(zhi)象(xiang)(xiang)，時(shi)與二氣(qi)上下。而(er)(er)(er)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)終(zhong)始(shi)(shi)，亦(yi)由(you)二卦(gua)可見(jian)(jian)(jian)。故(gu)(gu)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)用(yong)；必以(yi)(yi)(yi)泰(tai)否(fou)分(fen)(fen)(fen)(fen)明，而(er)(er)(er)始(shi)(shi)終(zhong)之(zhi)(zhi)(zhi)(zhi)數(shu)；則(ze)(ze)(ze)(ze)以(yi)(yi)(yi)既(ji)(ji)(ji)未(wei)濟賅括(kuo)之(zhi)(zhi)(zhi)(zhi)也(ye)。既(ji)(ji)(ji)未(wei)濟，以(yi)(yi)(yi)坎(kan)(kan)(kan)離(li)(li)(li)(li)分(fen)(fen)(fen)(fen)合(he)(he)；示生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)始(shi)(shi)終(zhong)，足(zu)見(jian)(jian)(jian)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)所(suo)以(yi)(yi)(yi)始(shi)(shi)終(zhong)者(zhe)(zhe)，即由(you)二氣(qi)分(fen)(fen)(fen)(fen)合(he)(he)來也(ye)。合(he)(he)則(ze)(ze)(ze)(ze)始(shi)(shi)，分(fen)(fen)(fen)(fen)則(ze)(ze)(ze)(ze)終(zhong)；而(er)(er)(er)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)大(da)(da)(da)始(shi)(shi)，氣(qi)之(zhi)(zhi)(zhi)(zhi)始(shi)(shi)也(ye)；非即生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)之(zhi)(zhi)(zhi)(zhi)成(cheng)(cheng)(cheng)(cheng)也(ye)，必合(he)(he)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)而(er)(er)(er)后(hou)(hou)成(cheng)(cheng)(cheng)(cheng)其(qi)(qi)(qi)生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)。故(gu)(gu)卦(gua)必以(yi)(yi)(yi)坎(kan)(kan)(kan)離(li)(li)(li)(li)代(dai)(dai)乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)，以(yi)(yi)(yi)水火(huo)日月(yue)，明陰(yin)陽之(zhi)(zhi)(zhi)(zhi)功；天地(di)之(zhi)(zhi)(zhi)(zhi)用(yong)，其(qi)(qi)(qi)義至(zhi)(zhi)明顯(xian)。蓋有(you)形者(zhe)(zhe)，必有(you)生(sheng)(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)。有(you)名者(zhe)(zhe)，必有(you)始(shi)(shi)終(zhong)。乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)純也(ye)，不(bu)足(zu)以(yi)(yi)(yi)資形之(zhi)(zhi)(zhi)(zhi)成(cheng)(cheng)(cheng)(cheng)，名之(zhi)(zhi)(zhi)(zhi)立。故(gu)(gu)有(you)是用(yong)、而(er)(er)(er)末(mo)(mo)見(jian)(jian)(jian)于(yu)物，有(you)是氣(qi)、而(er)(er)(er)末(mo)(mo)麗(li)于(yu)器。其(qi)(qi)(qi)所(suo)處玄高，其(qi)(qi)(qi)所(suo)至(zhi)(zhi)冥渺(miao)，人(ren)或(huo)末(mo)(mo)之(zhi)(zhi)(zhi)(zhi)察(cha)；故(gu)(gu)必寄其(qi)(qi)(qi)功用(yong)于(yu)坎(kan)(kan)(kan)離(li)(li)(li)(li)焉！故(gu)(gu)言后(hou)(hou)天之(zhi)(zhi)(zhi)(zhi)易(yi)，雖乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)亦(yi)以(yi)(yi)(yi)坎(kan)(kan)(kan)離(li)(li)(li)(li)為主(zhu)(zhu)；乾(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)(qian)坤(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)(kun)自退(tui)居隅位(wei)也(ye)。
乾坤二卦，有先后天之殊；而易以后天為主，自從周易。卦以先天為本，當溯伏羲。其(qi)(qi)(qi)辭則(ze)(ze)兩者(zhe)(zhe)(zhe)參和(he)，以(yi)(yi)申其(qi)(qi)(qi)義(yi)(yi)而(er)(er)(er)(er)通其(qi)(qi)(qi)用(yong)也(ye)(ye)(ye)。如乾(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)純陽，先天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)數(shu)(shu)也(ye)(ye)(ye)；而(er)(er)(er)(er)其(qi)(qi)(qi)功用(yong)在(zai)(zai)(zai)交坤(kun)(kun)，則(ze)(ze)后(hou)天(tian)矣(yi)。先天(tian)主(zhu)(zhu)常(chang)，后(hou)天(tian)主(zhu)(zhu)變(bian)(bian)(bian)(bian)；常(chang)則(ze)(ze)致一，變(bian)(bian)(bian)(bian)則(ze)(ze)無盡。故(gu)(gu)(gu)(gu)上(shang)而(er)(er)(er)(er)返(fan)(fan)于(yu)太(tai)虛，以(yi)(yi)接太(tai)極(ji)(ji)之(zhi)(zhi)(zhi)(zhi)(zhi)初(chu)元(yuan)(yuan)(yuan)者(zhe)(zhe)(zhe)，先天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)也(ye)(ye)(ye)。下而(er)(er)(er)(er)化(hua)(hua)為(wei)全易(yi)，以(yi)(yi)窮萬物(wu)(wu)(wu)(wu)之(zhi)(zhi)(zhi)(zhi)(zhi)變(bian)(bian)(bian)(bian)者(zhe)(zhe)(zhe)，后(hou)天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)也(ye)(ye)(ye)。而(er)(er)(er)(er)人(ren)(ren)道(dao)(dao)介乎中(zhong)焉！人(ren)(ren)道(dao)(dao)自(zi)(zi)(zi)在(zai)(zai)(zai)天(tian)地之(zhi)(zhi)(zhi)(zhi)(zhi)中(zhong)；有(you)(you)所(suo)自(zi)(zi)(zi)來，有(you)(you)所(suo)自(zi)(zi)(zi)去(qu)；既同萬物(wu)(wu)(wu)(wu)生(sheng)化(hua)(hua)，復(fu)(fu)抱(bao)太(tai)極(ji)(ji)元(yuan)(yuan)(yuan)精(jing)；上(shang)下共通，神形(xing)(xing)俱備。居天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)下，而(er)(er)(er)(er)氣(qi)達于(yu)乾(qian)(qian)(qian)先；履地之(zhi)(zhi)(zhi)(zhi)(zhi)上(shang)，而(er)(er)(er)(er)德周乎坤(kun)(kun)表。故(gu)(gu)(gu)(gu)用(yong)包全易(yi)，而(er)(er)(er)(er)窺探隱微(wei)；智周萬物(wu)(wu)(wu)(wu)，而(er)(er)(er)(er)止定中(zhong)一，不(bu)(bu)(bu)(bu)(bu)相悖也(ye)(ye)(ye)。易(yi)教以(yi)(yi)人(ren)(ren)道(dao)(dao)為(wei)主(zhu)(zhu)。乾(qian)(qian)(qian)坤(kun)(kun)大(da)(da)用(yong)，人(ren)(ren)自(zi)(zi)(zi)合之(zhi)(zhi)(zhi)(zhi)(zhi)；生(sheng)化(hua)(hua)大(da)(da)數(shu)(shu)，人(ren)(ren)自(zi)(zi)(zi)達之(zhi)(zhi)(zhi)(zhi)(zhi)。非(fei)(fei)有(you)(you)神奇(qi)，乃(nai)性情之(zhi)(zhi)(zhi)(zhi)(zhi)故(gu)(gu)(gu)(gu)。性情者(zhe)(zhe)(zhe)，亦(yi)(yi)猶(you)(you)乾(qian)(qian)(qian)坤(kun)(kun)也(ye)(ye)(ye)，猶(you)(you)氣(qi)之(zhi)(zhi)(zhi)(zhi)(zhi)先后(hou)天(tian)也(ye)(ye)(ye)，而(er)(er)(er)(er)推(tui)之(zhi)(zhi)(zhi)(zhi)(zhi)至于(yu)動靜事物(wu)(wu)(wu)(wu)；則(ze)(ze)全易(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)象也(ye)(ye)(ye)。格物(wu)(wu)(wu)(wu)致知(zhi)，乃(nai)返(fan)(fan)本復(fu)(fu)始。故(gu)(gu)(gu)(gu)曰：形(xing)(xing)上(shang)為(wei)道(dao)(dao)，形(xing)(xing)下為(wei)器(qi)。在(zai)(zai)(zai)生(sheng)之(zhi)(zhi)(zhi)(zhi)(zhi)時，莫(mo)外物(wu)(wu)(wu)(wu)育，莫(mo)逃氣(qi)化(hua)(hua)；則(ze)(ze)后(hou)天(tian)之(zhi)(zhi)(zhi)(zhi)(zhi)身(shen)，仍以(yi)(yi)水火為(wei)主(zhu)(zhu)也(ye)(ye)(ye)；其(qi)(qi)(qi)極(ji)(ji)則(ze)(ze)既未濟，以(yi)(yi)至大(da)(da)終；其(qi)(qi)(qi)盛則(ze)(ze)威恒，以(yi)(yi)成大(da)(da)用(yong)；其(qi)(qi)(qi)返(fan)(fan)則(ze)(ze)乾(qian)(qian)(qian)坤(kun)(kun)，以(yi)(yi)歸大(da)(da)一。其(qi)(qi)(qi)逆則(ze)(ze)泰否，以(yi)(yi)見(jian)大(da)(da)循環也(ye)(ye)(ye)。故(gu)(gu)(gu)(gu)變(bian)(bian)(bian)(bian)者(zhe)(zhe)(zhe)自(zi)(zi)(zi)變(bian)(bian)(bian)(bian)，常(chang)者(zhe)(zhe)(zhe)自(zi)(zi)(zi)常(chang)；久者(zhe)(zhe)(zhe)自(zi)(zi)(zi)久，夭(yao)者(zhe)(zhe)(zhe)自(zi)(zi)(zi)夭(yao)。物(wu)(wu)(wu)(wu)數(shu)(shu)自(zi)(zi)(zi)然(ran)，人(ren)(ren)道(dao)(dao)立乎其(qi)(qi)(qi)中(zhong)矣(yi)！果隨(sui)物(wu)(wu)(wu)(wu)數(shu)(shu)生(sheng)化(hua)(hua)者(zhe)(zhe)(zhe)，是(shi)物(wu)(wu)(wu)(wu)數(shu)(shu)也(ye)(ye)(ye)，非(fei)(fei)人(ren)(ren)也(ye)(ye)(ye)。人(ren)(ren)自(zi)(zi)(zi)有(you)(you)離物(wu)(wu)(wu)(wu)數(shu)(shu)者(zhe)(zhe)(zhe)，在(zai)(zai)(zai)性命(ming)(ming)是(shi)也(ye)(ye)(ye)。故(gu)(gu)(gu)(gu)乾(qian)(qian)(qian)辭曰：乾(qian)(qian)(qian)道(dao)(dao)變(bian)(bian)(bian)(bian)化(hua)(hua)，各正(zheng)性命(ming)(ming)；保合太(tai)和(he)，乃(nai)利(li)貞(zhen)。此明指(zhi)人(ren)(ren)道(dao)(dao)之(zhi)(zhi)(zhi)(zhi)(zhi)異乎物(wu)(wu)(wu)(wu)數(shu)(shu)，能行(xing)乾(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)變(bian)(bian)(bian)(bian)化(hua)(hua)，而(er)(er)(er)(er)保乾(qian)(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)中(zhong)和(he)也(ye)(ye)(ye)。即在(zai)(zai)(zai)正(zheng)性命(ming)(ming)三字，性命(ming)(ming)處(chu)變(bian)(bian)(bian)(bian)不(bu)(bu)(bu)(bu)(bu)變(bian)(bian)(bian)(bian)，隨(sui)化(hua)(hua)不(bu)(bu)(bu)(bu)(bu)化(hua)(hua)；是(shi)名(ming)二(er)(er)元(yuan)(yuan)(yuan)。乾(qian)(qian)(qian)元(yuan)(yuan)(yuan)、坤(kun)(kun)元(yuan)(yuan)(yuan)，永不(bu)(bu)(bu)(bu)(bu)變(bian)(bian)(bian)(bian)化(hua)(hua)；乃(nai)能主(zhu)(zhu)變(bian)(bian)(bian)(bian)化(hua)(hua)，人(ren)(ren)道(dao)(dao)所(suo)立，在(zai)(zai)(zai)此義(yi)(yi)矣(yi)。故(gu)(gu)(gu)(gu)乾(qian)(qian)(qian)坤(kun)(kun)在(zai)(zai)(zai)變(bian)(bian)(bian)(bian)化(hua)(hua)言(yan)(yan)：六十四卦皆其(qi)(qi)(qi)用(yong)也(ye)(ye)(ye)。在(zai)(zai)(zai)不(bu)(bu)(bu)(bu)(bu)變(bian)(bian)(bian)(bian)不(bu)(bu)(bu)(bu)(bu)化(hua)(hua)言(yan)(yan)，則(ze)(ze)唯乾(qian)(qian)(qian)元(yuan)(yuan)(yuan)、坤(kun)(kun)元(yuan)(yuan)(yuan)，行(xing)于(yu)全易(yi)悠然(ran)如故(gu)(gu)(gu)(gu)也(ye)(ye)(ye)。而(er)(er)(er)(er)人(ren)(ren)道(dao)(dao)象之(zhi)(zhi)(zhi)(zhi)(zhi)，不(bu)(bu)(bu)(bu)(bu)得以(yi)(yi)變(bian)(bian)(bian)(bian)化(hua)(hua)而(er)(er)(er)(er)忘(wang)其(qi)(qi)(qi)本；故(gu)(gu)(gu)(gu)不(bu)(bu)(bu)(bu)(bu)得以(yi)(yi)事物(wu)(wu)(wu)(wu)而(er)(er)(er)(er)忘(wang)其(qi)(qi)(qi)性命(ming)(ming)。性命(ming)(ming)之(zhi)(zhi)(zhi)(zhi)(zhi)正(zheng)，則(ze)(ze)乾(qian)(qian)(qian)坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)元(yuan)(yuan)(yuan)永存。性命(ming)(ming)不(bu)(bu)(bu)(bu)(bu)正(zheng)，則(ze)(ze)生(sheng)化(hua)(hua)之(zhi)(zhi)(zhi)(zhi)(zhi)數(shu)(shu)胡底。故(gu)(gu)(gu)(gu)言(yan)(yan)乾(qian)(qian)(qian)坤(kun)(kun)二(er)(er)卦，重(zhong)在(zai)(zai)(zai)二(er)(er)元(yuan)(yuan)(yuan)；而(er)(er)(er)(er)人(ren)(ren)道(dao)(dao)喻之(zhi)(zhi)(zhi)(zhi)(zhi)，重(zhong)在(zai)(zai)(zai)性命(ming)(ming)；性命(ming)(ming)非(fei)(fei)身(shen)骸之(zhi)(zhi)(zhi)(zhi)(zhi)比。身(shen)骸，變(bian)(bian)(bian)(bian)化(hua)(hua)之(zhi)(zhi)(zhi)(zhi)(zhi)物(wu)(wu)(wu)(wu)命(ming)(ming)。非(fei)(fei)我(wo)有(you)(you)，亦(yi)(yi)非(fei)(fei)天(tian)有(you)(you)。非(fei)(fei)我(wo)有(you)(you)者(zhe)(zhe)(zhe)，言(yan)(yan)不(bu)(bu)(bu)(bu)(bu)正(zheng)，乃(nai)為(wei)變(bian)(bian)(bian)(bian)化(hua)(hua)所(suo)役。非(fei)(fei)天(tian)有(you)(you)者(zhe)(zhe)(zhe)，言(yan)(yan)果正(zheng)，則(ze)(ze)變(bian)(bian)(bian)(bian)化(hua)(hua)不(bu)(bu)(bu)(bu)(bu)得而(er)(er)(er)(er)干之(zhi)(zhi)(zhi)(zhi)(zhi)。故(gu)(gu)(gu)(gu)性命(ming)(ming)必待人(ren)(ren)自(zi)(zi)(zi)正(zheng)也(ye)(ye)(ye)，如乾(qian)(qian)(qian)坤(kun)(kun)二(er)(er)元(yuan)(yuan)(yuan)。乾(qian)(qian)(qian)坤(kun)(kun)不(bu)(bu)(bu)(bu)(bu)使(shi)之(zhi)(zhi)(zhi)(zhi)(zhi)變(bian)(bian)(bian)(bian)化(hua)(hua)也(ye)(ye)(ye)；雖窮極(ji)(ji)猶(you)(you)如初(chu)也(ye)(ye)(ye)。在(zai)(zai)(zai)物(wu)(wu)(wu)(wu)數(shu)(shu)言(yan)(yan)；視二(er)(er)元(yuan)(yuan)(yuan)為(wei)變(bian)(bian)(bian)(bian)，而(er)(er)(er)(er)實變(bian)(bian)(bian)(bian)在(zai)(zai)(zai)物(wu)(wu)(wu)(wu)數(shu)(shu)，無與(yu)二(er)(er)元(yuan)(yuan)(yuan)也(ye)(ye)(ye)。六爻(yao)至上(shang)位，變(bian)(bian)(bian)(bian)化(hua)(hua)之(zhi)(zhi)(zhi)(zhi)(zhi)時；而(er)(er)(er)(er)二(er)(er)元(yuan)(yuan)(yuan)乃(nai)見(jian)，常(chang)者(zhe)(zhe)(zhe)自(zi)(zi)(zi)不(bu)(bu)(bu)(bu)(bu)隨(sui)變(bian)(bian)(bian)(bian)也(ye)(ye)(ye)。
乾坤(kun)(kun)皆以(yi)(yi)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)為用(yong)，皆主(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)。乾主(zhu)(zhu)氣，坤(kun)(kun)主(zhu)(zhu)形；而(er)(er)(er)二(er)者(zhe)之(zhi)(zhi)(zhi)(zhi)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)，則(ze)(ze)以(yi)(yi)交合(he)(he)(he)(he)成用(yong)。此(ci)由后天之(zhi)(zhi)(zhi)(zhi)物(wu)(wu)，必(bi)(bi)合(he)(he)(he)(he)氣形，而(er)(er)(er)后見(jian)(jian)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)也(ye)(ye)(ye)。如水與火，為變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)之(zhi)(zhi)(zhi)(zhi)原；而(er)(er)(er)水中(zhong)有陰陽，火中(zhong)亦有陰陽；坎(kan)離(li)(li)系(xi)已交合(he)(he)(he)(he)之(zhi)(zhi)(zhi)(zhi)乾坤(kun)(kun)也(ye)(ye)(ye)。若純(chun)乾純(chun)坤(kun)(kun)，則(ze)(ze)不(bu)(bu)見(jian)(jian)其(qi)(qi)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)之(zhi)(zhi)(zhi)(zhi)跡，物(wu)(wu)之(zhi)(zhi)(zhi)(zhi)生(sheng)(sheng)也(ye)(ye)(ye)；必(bi)(bi)因日(ri)光之(zhi)(zhi)(zhi)(zhi)熱(re)，水泉之(zhi)(zhi)(zhi)(zhi)溉，而(er)(er)(er)后生(sheng)(sheng)。若徒有其(qi)(qi)一(yi)(yi)，不(bu)(bu)能(neng)(neng)生(sheng)(sheng)；生(sheng)(sheng)亦不(bu)(bu)能(neng)(neng)育。此(ci)可見(jian)(jian)后天生(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)之(zhi)(zhi)(zhi)(zhi)非純(chun)氣所(suo)為也(ye)(ye)(ye)；物(wu)(wu)之(zhi)(zhi)(zhi)(zhi)化(hua)(hua)(hua)(hua)(hua)也(ye)(ye)(ye)，亦如之(zhi)(zhi)(zhi)(zhi)。必(bi)(bi)由一(yi)(yi)暴一(yi)(yi)寒而(er)(er)(er)后化(hua)(hua)(hua)(hua)(hua)，一(yi)(yi)火一(yi)(yi)水而(er)(er)(er)后變(bian)(bian)(bian)(bian)(bian)(bian)(bian)；天下之(zhi)(zhi)(zhi)(zhi)生(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)，莫不(bu)(bu)由是(shi)成；則(ze)(ze)乾坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)生(sheng)(sheng)成變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)，實必(bi)(bi)合(he)(he)(he)(he)而(er)(er)(er)后見(jian)(jian)。故(gu)占變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)者(zhe)，必(bi)(bi)占其(qi)(qi)合(he)(he)(he)(he)；而(er)(er)(er)取乾坤(kun)(kun)者(zhe)，必(bi)(bi)取坎(kan)離(li)(li)，乃(nai)常(chang)例也(ye)(ye)(ye)。唯(wei)人(ren)道(dao)(dao)不(bu)(bu)然(ran)，有合(he)(he)(he)(he)而(er)(er)(er)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)者(zhe)，有分而(er)(er)(er)主(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)者(zhe)；人(ren)道(dao)(dao)之(zhi)(zhi)(zhi)(zhi)乾坤(kun)(kun)，取其(qi)(qi)純(chun)，而(er)(er)(er)坎(kan)離(li)(li)取其(qi)(qi)合(he)(he)(he)(he)。故(gu)言(yan)修者(zhe)，必(bi)(bi)始坎(kan)離(li)(li)，而(er)(er)(er)還于(yu)乾坤(kun)(kun)。即由變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)達于(yu)不(bu)(bu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)，以(yi)(yi)不(bu)(bu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)而(er)(er)(er)主(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)也(ye)(ye)(ye)。事(shi)物(wu)(wu)萬(wan)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)，而(er)(er)(er)心永(yong)常(chang)。言(yan)行(xing)萬(wan)途，而(er)(er)(er)道(dao)(dao)德一(yi)(yi)致。此(ci)象乎(hu)乾坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)用(yong)，而(er)(er)(er)能(neng)(neng)保其(qi)(qi)乾坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)元(yuan)也(ye)(ye)(ye)；唯(wei)圣人(ren)至焉！乃(nai)正性命之(zhi)(zhi)(zhi)(zhi)功(gong)也(ye)(ye)(ye)。故(gu)道(dao)(dao)家言(yan)修，必(bi)(bi)歸(gui)先(xian)天，而(er)(er)(er)必(bi)(bi)自(zi)坎(kan)離(li)(li)著手，乾坤(kun)(kun)為成。乾坤(kun)(kun)之(zhi)(zhi)(zhi)(zhi)外，即坎(kan)離(li)(li)。坎(kan)離(li)(li)之(zhi)(zhi)(zhi)(zhi)先(xian)，即乾坤(kun)(kun)。合(he)(he)(he)(he)先(xian)后天八卦方位觀(guan)之(zhi)(zhi)(zhi)(zhi)，則(ze)(ze)了(le)然(ran)矣！易(yi)牧言(yan)乾坤(kun)(kun)，為事(shi)物(wu)(wu)生(sheng)(sheng)化(hua)(hua)(hua)(hua)(hua)之(zhi)(zhi)(zhi)(zhi)初(chu)，亦人(ren)生(sheng)(sheng)xiuchi之(zhi)(zhi)(zhi)(zhi)果；為天地變(bian)(bian)(bian)(bian)(bian)(bian)(bian)化(hua)(hua)(hua)(hua)(hua)之(zhi)(zhi)(zhi)(zhi)始，亦人(ren)物(wu)(wu)本(ben)原之(zhi)(zhi)(zhi)(zhi)樞。乾坤(kun)(kun)在后天言(yan)：尚(shang)無他物(wu)(wu)數之(zhi)(zhi)(zhi)(zhi)雜。在先(xian)天言(yan)：已覺有形氣之(zhi)(zhi)(zhi)(zhi)分。象辭所(suo)指，實賅上下，而(er)(er)(er)人(ren)道(dao)(dao)立極；當于(yu)此(ci)始，自(zi)此(ci)以(yi)(yi)下，皆屬既變(bian)(bian)(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)象；而(er)(er)(er)在此(ci)二(er)卦中(zhong)，則(ze)(ze)猶(you)見(jian)(jian)其(qi)(qi)初(chu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)末變(bian)(bian)(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)時。此(ci)乾坤(kun)(kun)二(er)元(yuan)，揭其(qi)(qi)不(bu)(bu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)真。以(yi)(yi)為天地立極，即為人(ren)道(dao)(dao)立極也(ye)(ye)(ye)。
夫卦(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)為(wei)(wei)用(yong)，本以(yi)(yi)(yi)(yi)(yi)(yi)測天(tian)(tian)(tian)(tian)道(dao)(dao)，而(er)(er)(er)(er)(er)(er)(er)(er)定人(ren)事(shi)。天(tian)(tian)(tian)(tian)道(dao)(dao)常(chang)而(er)(er)(er)(er)(er)(er)(er)(er)有(you)變(bian)(bian)(bian)(bian)(bian)，則(ze)(ze)時位之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)殊也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。地(di)道(dao)(dao)變(bian)(bian)(bian)(bian)(bian)而(er)(er)(er)(er)(er)(er)(er)(er)有(you)常(chang)，所(suo)(suo)(suo)以(yi)(yi)(yi)(yi)(yi)(yi)奉天(tian)(tian)(tian)(tian)時也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。人(ren)立其中，則(ze)(ze)應變(bian)(bian)(bian)(bian)(bian)以(yi)(yi)(yi)(yi)(yi)(yi)常(chang)；居常(chang)達(da)變(bian)(bian)(bian)(bian)(bian)，方(fang)為(wei)(wei)道(dao)(dao)行(xing)(xing)。傳日(ri)：神(shen)(shen)(shen)(shen)以(yi)(yi)(yi)(yi)(yi)(yi)知(zhi)(zhi)(zhi)(zhi)(zhi)來，知(zhi)(zhi)(zhi)(zhi)(zhi)以(yi)(yi)(yi)(yi)(yi)(yi)藏(zang)(zang)往(wang)(wang)。來往(wang)(wang)者(zhe)(zhe)，常(chang)變(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)事(shi)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。神(shen)(shen)(shen)(shen)智(zhi)(zhi)者(zhe)(zhe)，天(tian)(tian)(tian)(tian)人(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)分(fen)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。神(shen)(shen)(shen)(shen)以(yi)(yi)(yi)(yi)(yi)(yi)知(zhi)(zhi)(zhi)(zhi)(zhi)來，非(fei)神(shen)(shen)(shen)(shen)不知(zhi)(zhi)(zhi)(zhi)(zhi)；而(er)(er)(er)(er)(er)(er)(er)(er)陰(yin)陽不測之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)謂(wei)(wei)神(shen)(shen)(shen)(shen)。何以(yi)(yi)(yi)(yi)(yi)(yi)知(zhi)(zhi)(zhi)(zhi)(zhi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)哉？則(ze)(ze)在(zai)能(neng)(neng)通(tong)(tong)(tong)神(shen)(shen)(shen)(shen)，能(neng)(neng)明(ming)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)行(xing)(xing)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。乾(qian)(qian)，天(tian)(tian)(tian)(tian)道(dao)(dao)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。智(zhi)(zhi)以(yi)(yi)(yi)(yi)(yi)(yi)藏(zang)(zang)往(wang)(wang)，非(fei)智(zhi)(zhi)下(xia)藏(zang)(zang)；而(er)(er)(er)(er)(er)(er)(er)(er)顯(xian)仁藏(zang)(zang)用(yong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)謂(wei)(wei)智(zhi)(zhi)。何以(yi)(yi)(yi)(yi)(yi)(yi)得(de)(de)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)乎(hu)(hu)？則(ze)(ze)在(zai)能(neng)(neng)用(yong)智(zhi)(zhi)，能(neng)(neng)師坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。坤(kun)(kun)(kun)(kun)，地(di)道(dao)(dao)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。神(shen)(shen)(shen)(shen)知(zhi)(zhi)(zhi)(zhi)(zhi)行(xing)(xing)于(yu)(yu)無(wu)(wu)(wu)形(xing)，著于(yu)(yu)有(you)象(xiang)；智(zhi)(zhi)藏(zang)(zang)發(fa)于(yu)(yu)有(you)象(xiang)，潛于(yu)(yu)無(wu)(wu)(wu)形(xing)。此(ci)天(tian)(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)合(he)(he)，而(er)(er)(er)(er)(er)(er)(er)(er)人(ren)道(dao)(dao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)準也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。乾(qian)(qian)固(gu)以(yi)(yi)(yi)(yi)(yi)(yi)易示人(ren)，而(er)(er)(er)(er)(er)(er)(er)(er)人(ren)莫窮其繁。坤(kun)(kun)(kun)(kun)固(gu)以(yi)(yi)(yi)(yi)(yi)(yi)簡示人(ren)，而(er)(er)(er)(er)(er)(er)(er)(er)人(ren)莫悉其蘊。為(wei)(wei)其有(you)神(shen)(shen)(shen)(shen)智(zhi)(zhi)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)，常(chang)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)，變(bian)(bian)(bian)(bian)(bian)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)，神(shen)(shen)(shen)(shen)智(zhi)(zhi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)(suo)通(tong)(tong)(tong)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)；而(er)(er)(er)(er)(er)(er)(er)(er)見(jian)徵于(yu)(yu)象(xiang)焉。為(wei)(wei)其司天(tian)(tian)(tian)(tian)地(di)生(sheng)化(hua)，人(ren)物變(bian)(bian)(bian)(bian)(bian)遷，有(you)其序(xu)(xu)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。序(xu)(xu)何在(zai)，在(zai)卦(gua)爻。卦(gua)爻者(zhe)(zhe)，時位之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)(suo)憑也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)，常(chang)變(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)(suo)判也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。相(xiang)合(he)(he)而(er)(er)(er)(er)(er)(er)(er)(er)生(sheng)，相(xiang)分(fen)而(er)(er)(er)(er)(er)(er)(er)(er)化(hua)，相(xiang)交而(er)(er)(er)(er)(er)(er)(er)(er)變(bian)(bian)(bian)(bian)(bian)；相(xiang)敵(di)而(er)(er)(er)(er)(er)(er)(er)(er)遷。皆由(you)時位所(suo)(suo)(suo)為(wei)(wei)，此(ci)人(ren)道(dao)(dao)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)(suo)本也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。故(gu)(gu)(gu)知(zhi)(zhi)(zhi)(zhi)(zhi)乾(qian)(qian)者(zhe)(zhe)必(bi)知(zhi)(zhi)(zhi)(zhi)(zhi)坤(kun)(kun)(kun)(kun)，求之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)乾(qian)(qian)不得(de)(de)，則(ze)(ze)求之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)坤(kun)(kun)(kun)(kun)。坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)于(yu)(yu)乾(qian)(qian)亦(yi)然；未有(you)不能(neng)(neng)通(tong)(tong)(tong)而(er)(er)(er)(er)(er)(er)(er)(er)知(zhi)(zhi)(zhi)(zhi)(zhi)變(bian)(bian)(bian)(bian)(bian)者(zhe)(zhe)，亦(yi)末(mo)有(you)通(tong)(tong)(tong)而(er)(er)(er)(er)(er)(er)(er)(er)不達(da)變(bian)(bian)(bian)(bian)(bian)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。常(chang)變(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)數，即(ji)(ji)神(shen)(shen)(shen)(shen)智(zhi)(zhi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)(suo)明(ming)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。而(er)(er)(er)(er)(er)(er)(er)(er)唯通(tong)(tong)(tong)者(zhe)(zhe)得(de)(de)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，通(tong)(tong)(tong)于(yu)(yu)乾(qian)(qian)坤(kun)(kun)(kun)(kun)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。人(ren)謂(wei)(wei)乾(qian)(qian)坤(kun)(kun)(kun)(kun)陰(yin)陽大(da)異！天(tian)(tian)(tian)(tian)地(di)懸絕，安能(neng)(neng)通(tong)(tong)(tong)為(wei)(wei)一(yi)耶(ye)？此(ci)不明(ming)易者(zhe)(zhe)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)言(yan)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。夫變(bian)(bian)(bian)(bian)(bian)者(zhe)(zhe)，反常(chang)者(zhe)(zhe)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。反常(chang)則(ze)(ze)陽而(er)(er)(er)(er)(er)(er)(er)(er)陰(yin)矣(yi)！陰(yin)而(er)(er)(er)(er)(er)(er)(er)(er)陽矣(yi)！則(ze)(ze)乾(qian)(qian)變(bian)(bian)(bian)(bian)(bian)而(er)(er)(er)(er)(er)(er)(er)(er)坤(kun)(kun)(kun)(kun)矣(yi)！坤(kun)(kun)(kun)(kun)變(bian)(bian)(bian)(bian)(bian)而(er)(er)(er)(er)(er)(er)(er)(er)乾(qian)(qian)矣(yi)！乾(qian)(qian)坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)間，即(ji)(ji)來往(wang)(wang)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)跡。乾(qian)(qian)坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)內，有(you)常(chang)變(bian)(bian)(bian)(bian)(bian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)途；而(er)(er)(er)(er)(er)(er)(er)(er)行(xing)(xing)乎(hu)(hu)此(ci)者(zhe)(zhe)，氣(qi)與(yu)理耳。氣(qi)以(yi)(yi)(yi)(yi)(yi)(yi)奉神(shen)(shen)(shen)(shen)，理以(yi)(yi)(yi)(yi)(yi)(yi)御形(xing)。故(gu)(gu)(gu)神(shen)(shen)(shen)(shen)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)不知(zhi)(zhi)(zhi)(zhi)(zhi)者(zhe)(zhe)，氣(qi)所(suo)(suo)(suo)屬也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。智(zhi)(zhi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)不用(yong)者(zhe)(zhe)，理所(suo)(suo)(suo)為(wei)(wei)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。理以(yi)(yi)(yi)(yi)(yi)(yi)衡乎(hu)(hu)智(zhi)(zhi)，則(ze)(ze)坤(kun)(kun)(kun)(kun)藏(zang)(zang)用(yong)，而(er)(er)(er)(er)(er)(er)(er)(er)無(wu)(wu)(wu)不用(yong)。氣(qi)以(yi)(yi)(yi)(yi)(yi)(yi)明(ming)乎(hu)(hu)神(shen)(shen)(shen)(shen)？則(ze)(ze)乾(qian)(qian)行(xing)(xing)玄，而(er)(er)(er)(er)(er)(er)(er)(er)無(wu)(wu)(wu)所(suo)(suo)(suo)玄。蓋(gai)由(you)人(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)合(he)(he)天(tian)(tian)(tian)(tian)地(di)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。合(he)(he)天(tian)(tian)(tian)(tian)地(di)者(zhe)(zhe)，正性命也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。性命者(zhe)(zhe)，神(shen)(shen)(shen)(shen)智(zhi)(zhi)所(suo)(suo)(suo)寄。一(yi)顯(xian)一(yi)隱(yin)(yin)；隱(yin)(yin)者(zhe)(zhe)顯(xian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，顯(xian)者(zhe)(zhe)隱(yin)(yin)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。斯(si)為(wei)(wei)通(tong)(tong)(tong)矣(yi)！謂(wei)(wei)通(tong)(tong)(tong)其變(bian)(bian)(bian)(bian)(bian)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。顯(xian)變(bian)(bian)(bian)(bian)(bian)而(er)(er)(er)(er)(er)(er)(er)(er)隱(yin)(yin)，隱(yin)(yin)變(bian)(bian)(bian)(bian)(bian)而(er)(er)(er)(er)(er)(er)(er)(er)顯(xian)。斯(si)神(shen)(shen)(shen)(shen)以(yi)(yi)(yi)(yi)(yi)(yi)形(xing)明(ming)，形(xing)以(yi)(yi)(yi)(yi)(yi)(yi)神(shen)(shen)(shen)(shen)藏(zang)(zang)，其妙(miao)用(yong)無(wu)(wu)(wu)盡矣(yi)！故(gu)(gu)(gu)來非(fei)不可知(zhi)(zhi)(zhi)(zhi)(zhi)，得(de)(de)神(shen)(shen)(shen)(shen)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)自知(zhi)(zhi)(zhi)(zhi)(zhi)；往(wang)(wang)非(fei)必(bi)藏(zang)(zang)，得(de)(de)智(zhi)(zhi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)自藏(zang)(zang)。以(yi)(yi)(yi)(yi)(yi)(yi)其為(wei)(wei)乾(qian)(qian)坤(kun)(kun)(kun)(kun)大(da)用(yong)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。乾(qian)(qian)用(yong)以(yi)(yi)(yi)(yi)(yi)(yi)神(shen)(shen)(shen)(shen)，坤(kun)(kun)(kun)(kun)用(yong)以(yi)(yi)(yi)(yi)(yi)(yi)智(zhi)(zhi)。乾(qian)(qian)則(ze)(ze)知(zhi)(zhi)(zhi)(zhi)(zhi)來，坤(kun)(kun)(kun)(kun)則(ze)(ze)藏(zang)(zang)往(wang)(wang).合(he)(he)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)以(yi)(yi)(yi)(yi)(yi)(yi)用(yong)，天(tian)(tian)(tian)(tian)人(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)備矣(yi)。故(gu)(gu)(gu)乾(qian)(qian)坤(kun)(kun)(kun)(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)象(xiang)與(yu)辭，發(fa)乎(hu)(hu)隱(yin)(yin)，止乎(hu)(hu)顯(xian)，明(ming)乎(hu)(hu)人(ren)，通(tong)(tong)(tong)乎(hu)(hu)天(tian)(tian)(tian)(tian)。常(chang)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)，變(bian)(bian)(bian)(bian)(bian)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)；莫能(neng)(neng)外也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。此(ci)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)謂(wei)(wei)知(zhi)(zhi)(zhi)(zhi)(zhi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所(suo)(suo)(suo)為(wei)(wei)教(jiao)也(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)。
乾(qian)(qian)之辭以大(da)稱，坤(kun)之辭以廣(guang)稱，此天地(di)(di)之德也。人(ren)(ren)(ren)道法(fa)之，亦(yi)有(you)大(da)與廣(guang)之用。而乾(qian)(qian)坤(kun)之廣(guang)大(da)者(zhe)，以其道也，以其神智也。人(ren)(ren)(ren)之師法(fa)，亦(yi)如其神智，如其道。方稱三才。若有(you)不及(ji)，不足稱也。故卦六(liu)爻中三、四(si)屬人(ren)(ren)(ren)，而辭概重人(ren)(ren)(ren)；明示人(ren)(ren)(ren)所以配天地(di)(di)也。天在上，地(di)(di)在下(xia)，無論何卦皆然(ran)。而乾(qian)(qian)坤(kun)尤明顯者(zhe)，以乾(qian)(qian)坤(kun)象(xiang)天地(di)(di)也。然(ran)乾(qian)(qian)有(you)天、地(di)(di)、人(ren)(ren)(ren)；坤(kun)亦(yi)有(you)天、地(di)(di)、人(ren)(ren)(ren)。
則(ze)天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)內，固有人(ren)(ren)(ren)(ren)(ren)在。即可見天(tian)(tian)(tian)道(dao)(dao)、地(di)道(dao)(dao)中(zhong)，無(wu)不(bu)有人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)存也(ye)(ye)(ye)(ye)。人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)所以(yi)(yi)為人(ren)(ren)(ren)(ren)(ren)，亦所以(yi)(yi)明(ming)(ming)天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)。天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)：微而(er)玄，深(shen)而(er)大。而(er)人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)：時俯仰(yang)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，左右之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，以(yi)(yi)共成其三才(cai)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)稱(cheng)者(zhe)(zhe)；實(shi)微人(ren)(ren)(ren)(ren)(ren)無(wu)以(yi)(yi)著(zhu)(zhu)天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)也(ye)(ye)(ye)(ye)，無(wu)以(yi)(yi)明(ming)(ming)神智之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)妙也(ye)(ye)(ye)(ye)。無(wu)人(ren)(ren)(ren)(ren)(ren)著(zhu)(zhu)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)明(ming)(ming)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，于(yu)天(tian)(tian)(tian)地(di)無(wu)傷，而(er)天(tian)(tian)(tian)地(di)亦何與于(yu)人(ren)(ren)(ren)(ren)(ren)？則(ze)易(yi)(yi)可無(wu)作矣。而(er)圣人(ren)(ren)(ren)(ren)(ren)作之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)者(zhe)(zhe)，重人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)著(zhu)(zhu)明(ming)(ming)天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)，且(qie)以(yi)(yi)天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)成人(ren)(ren)(ren)(ren)(ren)；又(you)以(yi)(yi)人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)道(dao)(dao)，成天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)也(ye)(ye)(ye)(ye)；天(tian)(tian)(tian)地(di)猶以(yi)(yi)人(ren)(ren)(ren)(ren)(ren)用(yong)，況(kuang)下(xia)此者(zhe)(zhe)乎(hu)？故(gu)(gu)全易(yi)(yi)皆人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)也(ye)(ye)(ye)(ye)，皆天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所示人(ren)(ren)(ren)(ren)(ren)者(zhe)(zhe)。即圣人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)所以(yi)(yi)教人(ren)(ren)(ren)(ren)(ren)者(zhe)(zhe)，人(ren)(ren)(ren)(ren)(ren)習易(yi)(yi)，必(bi)求于(yu)此旨(zhi)，必(bi)能(neng)合乾(qian)(qian)坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)義。以(yi)(yi)為人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)德用(yong)，以(yi)(yi)達人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)神智，庶乎(hu)盡易(yi)(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)。通(tong)天(tian)(tian)(tian)地(di)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)心，而(er)克稱(cheng)三才(cai)。不(bu)然，卦(gua)爻(yao)何獨(du)貴中(zhong)爻(yao)哉？吉兇(xiong)福禍，何為言(yan)哉？知來者(zhe)(zhe)，誰命之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)神；藏往者(zhe)(zhe)，誰名(ming)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)智哉？何以(yi)(yi)見乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)大，坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)廣；又(you)何以(yi)(yi)通(tong)乾(qian)(qian)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)易(yi)(yi)，坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)簡哉？故(gu)(gu)易(yi)(yi)為人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)立也(ye)(ye)(ye)(ye)！而(er)首著(zhu)(zhu)其旨(zhi)于(yu)乾(qian)(qian)坤(kun)。學者(zhe)(zhe)讀(du)乾(qian)(qian)坤(kun)，要當(dang)神接智運，于(yu)乾(qian)(qian)坤(kun)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)中(zhong)有人(ren)(ren)(ren)(ren)(ren)也(ye)(ye)(ye)(ye)。雖(sui)乾(qian)(qian)坤(kun)卦(gua)六(liu)爻(yao)，要無(wu)非人(ren)(ren)(ren)(ren)(ren)道(dao)(dao)所上(shang)下(xia)者(zhe)(zhe)，人(ren)(ren)(ren)(ren)(ren)事所終始者(zhe)(zhe)，神智固人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)用(yong)，天(tian)(tian)(tian)地(di)亦人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)身。易(yi)(yi)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、簡之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)；大之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、廣之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，皆人(ren)(ren)(ren)(ren)(ren)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)德也(ye)(ye)(ye)(ye)。圣人(ren)(ren)(ren)(ren)(ren)雖(sui)言(yan)神，而(er)明(ming)(ming)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)存乎(hu)人(ren)(ren)(ren)(ren)(ren)。雖(sui)言(yan)易(yi)(yi)，而(er)用(yong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)在乎(hu)人(ren)(ren)(ren)(ren)(ren)。雖(sui)言(yan)氣與理(li)，常與變，而(er)通(tong)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、一之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，由(you)乎(hu)人(ren)(ren)(ren)(ren)(ren)。故(gu)(gu)乾(qian)(qian)坤(kun)二卦(gua)之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)辭，必(bi)配之(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)大人(ren)(ren)(ren)(ren)(ren)君(jun)子也(ye)(ye)(ye)(ye)。不(bu)言(yan)天(tian)(tian)(tian)神地(di)只(zhi)，而(er)獨(du)指大人(ren)(ren)(ren)(ren)(ren)君(jun)子也(ye)(ye)(ye)(ye)。
卦用常變。各有異同(tong)。而(er)(er)文王易(yi)純主變例(li)。與伏羲之(zhi)(zhi)易(yi)殊用。故(gu)乾(qian)(qian)坤(kun)(kun)二卦。相連為(wei)用。而(er)(er)八卦方位。反以(yi)坎(kan)離為(wei)主。坎(kan)代坤(kun)(kun)而(er)(er)為(wei)陽。離代乾(qian)(qian)而(er)(er)為(wei)陰(yin)。以(yi)明乾(qian)(qian)坤(kun)(kun)交(jiao)合成用之(zhi)(zhi)意。雖曰坎(kan)離。實(shi)乾(qian)(qian)坤(kun)(kun)也。不過己(ji)交(jiao)合之(zhi)(zhi)乾(qian)(qian)坤(kun)(kun)。非純陰(yin)之(zhi)(zhi)乾(qian)(qian)坤(kun)(kun)耳。故(gu)后天之(zhi)(zhi)象。以(yi)水火為(wei)主用。以(yi)日月為(wei)主體。其取(qu)義(yi)全異先天。為(wei)其變也。
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