《老子》章數及其經典化
古(gu)書在(zai)(zai)最初(chu)的(de)寫作(zuo)或(huo)編輯成篇時,自(zi)(zi)然就會“意窮而(er)成體”(《文(wen)心雕龍·章(zhang)(zhang)句(ju)》),形(xing)(xing)成分(fen)(fen)章(zhang)(zhang)。李(li)零(ling)稱之為(wei)“自(zi)(zi)然章(zhang)(zhang)句(ju)”:“古(gu)書在(zai)(zai)未(wei)經編次成篇之前(qian),本來就存在(zai)(zai)著許多(duo)意義(yi)相對(dui)獨立(li)的(de)片段(duan),也(ye)就是自(zi)(zi)然的(de)章(zhang)(zhang)句(ju)。古(gu)書的(de)編次成篇就是對(dui)這種(zhong)自(zi)(zi)然章(zhang)(zhang)句(ju)加以歸并和整理的(de)結果。”(李(li)零(ling):《〈孫子〉十三篇綜(zong)合研究》,中華(hua)書局(ju)2006年(nian),第(di)364頁)至遲(chi)在(zai)(zai)戰國中期,已(yi)經形(xing)(xing)成了(le)(le)明確的(de)章(zhang)(zhang)句(ju)觀念,其明證即是大量分(fen)(fen)章(zhang)(zhang)書寫的(de)簡(jian)(jian)帛文(wen)獻。如清(qing)華(hua)簡(jian)(jian)《系年(nian)》,“全(quan)(quan)篇138支簡(jian)(jian),每支簡(jian)(jian)背(bei)有(you)編號,共(gong)3875字。全(quan)(quan)篇原分(fen)(fen)23章(zhang)(zhang),每章(zhang)(zhang)相對(dui)獨立(li),章(zhang)(zhang)尾有(you)標志(zhi),簡(jian)(jian)尾留白。”(李(li)守奎:《〈清(qing)華(hua)簡(jian)(jian)系年(nian)與古(gu)史新探研究叢書〉前(qian)言》第(di)4頁,載馬(ma)楠(nan):《清(qing)華(hua)簡(jian)(jian)〈系年(nian)〉輯證》,中西書局(ju)2015年(nian))這已(yi)經與后世(shi)提(ti)行分(fen)(fen)段(duan)的(de)方(fang)式十分(fen)(fen)相似了(le)(le)。雖然《系年(nian)》撰作(zuo)之時未(wei)必即以鈔本所見的(de)方(fang)式分(fen)(fen)章(zhang)(zhang),但是分(fen)(fen)章(zhang)(zhang)出自(zi)(zi)原作(zuo)者,當無疑義(yi)。流風所及,分(fen)(fen)章(zhang)(zhang)也(ye)成為(wei)整理舊(jiu)籍的(de)重(zhong)要方(fang)式。原僅為(wei)“自(zi)(zi)然章(zhang)(zhang)句(ju)”的(de)舊(jiu)籍,也(ye)在(zai)(zai)此潮流中被(bei)系統整理分(fen)(fen)章(zhang)(zhang)。
《論(lun)衡·正說》:“說事(shi)者好(hao)神道恢義,不肖以遭禍,是故經(jing)傳篇(pian)(pian)數(shu),皆有所法(fa)……意異則文殊,事(shi)改則篇(pian)(pian)更(geng),據(ju)事(shi)意作,安得法(fa)象之(zhi)義乎(hu)?”漢(han)代將舊籍經(jing)典(dian)化的方式(shi)之(zhi)一(yi),就是使其篇(pian)(pian)章(zhang)數(shu)目具有特(te)(te)殊的意味。如(ru)“或(huo)說《尚(shang)書》二(er)(er)十(shi)(shi)(shi)九(jiu)篇(pian)(pian)者,法(fa)曰斗(dou)七(qi)宿也。四七(qi)二(er)(er)十(shi)(shi)(shi)八篇(pian)(pian),其一(yi)曰斗(dou)矣,故二(er)(er)十(shi)(shi)(shi)九(jiu)。”(《論(lun)衡·正說》)進而以特(te)(te)殊數(shu)字來重新編纂舊籍甚至部勒(le)新著(如(ru)《史記》《太玄》等)。目前所知全篇(pian)(pian)分章(zhang)的早期(qi)《老子》三(san)本,北(bei)大漢(han)簡(jian)本七(qi)十(shi)(shi)(shi)七(qi)章(zhang)、嚴遵《指歸》本七(qi)十(shi)(shi)(shi)二(er)(er)章(zhang)、河上公《章(zhang)句》本八十(shi)(shi)(shi)一(yi)章(zhang),都(dou)是這一(yi)趨勢的產(chan)物。
楊希枚將(jiang)這一(yi)現象(xiang)稱為(wei)“古(gu)(gu)(gu)(gu)籍(ji)神(shen)(shen)秘(mi)(mi)(mi)(mi)性(xing)(xing)(xing)(xing)(xing)(xing)編撰型式”:“古(gu)(gu)(gu)(gu)籍(ji)的(de)(de)(de)(de)(de)(de)篇卷(juan)或句數(shu)也(ye)就(jiu)(jiu)常采(cai)取某些(xie)固定的(de)(de)(de)(de)(de)(de)型式,期其與(yu)(yu)(yu)神(shen)(shen)秘(mi)(mi)(mi)(mi)數(shu)字互(hu)相(xiang)配合。古(gu)(gu)(gu)(gu)籍(ji)的(de)(de)(de)(de)(de)(de)編撰型式也(ye)因此就(jiu)(jiu)常是(shi)神(shen)(shen)秘(mi)(mi)(mi)(mi)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de),即(ji)暗寓天地之(zhi)道(dao)(dao)的(de)(de)(de)(de)(de)(de)象(xiang)征意(yi)義。”(楊希枚:《先秦文(wen)化史(shi)論集》,中(zhong)(zhong)國社會科學(xue)出版社1995年,第(di)736—737頁)所(suo)謂(wei)“神(shen)(shen)秘(mi)(mi)(mi)(mi)數(shu)字”是(shi)“中(zhong)(zhong)國古(gu)(gu)(gu)(gu)代(dai)社會,尤其是(shi)古(gu)(gu)(gu)(gu)神(shen)(shen)權社會使用(yong)(yong)的(de)(de)(de)(de)(de)(de)一(yi)種神(shen)(shen)秘(mi)(mi)(mi)(mi)語(yu)言(yan)(yan)或鬼神(shen)(shen)的(de)(de)(de)(de)(de)(de)語(yu)言(yan)(yan)”。楊氏認(ren)為(wei):“人(ren)類(lei)在超現實(shi)(shi)社會中(zhong)(zhong)用(yong)(yong)于與(yu)(yu)(yu)鬼神(shen)(shen)打交道(dao)(dao)的(de)(de)(de)(de)(de)(de),即(ji)用(yong)(yong)于宗教(jiao)生(sheng)活的(de)(de)(de)(de)(de)(de)語(yu)言(yan)(yan),故可(ke)稱之(zhi)為(wei)神(shen)(shen)秘(mi)(mi)(mi)(mi)語(yu)言(yan)(yan)。神(shen)(shen)秘(mi)(mi)(mi)(mi)語(yu)言(yan)(yan)常是(shi)非自喻(yu)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de),也(ye)即(ji)隱喻(yu)性(xing)(xing)(xing)(xing)(xing)(xing)或象(xiang)征性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de)語(yu)言(yan)(yan)。”(《先秦文(wen)化史(shi)論集》第(di)616頁)楊氏出身人(ren)類(lei)學(xue),他的(de)(de)(de)(de)(de)(de)研究確(que)實(shi)(shi)令人(ren)耳目一(yi)新。但是(shi)完全(quan)以(yi)(yi)(yi)人(ren)類(lei)學(xue)框架(jia)來研究一(yi)種成熟思(si)想,容易看不出這一(yi)思(si)想的(de)(de)(de)(de)(de)(de)精(jing)微之(zhi)處(chu)。胡適(shi)曾提出中(zhong)(zhong)國古(gu)(gu)(gu)(gu)代(dai)哲學(xue)是(shi)基(ji)于理(li)(li)(li)性(xing)(xing)(xing)(xing)(xing)(xing)主義思(si)潮(胡適(shi):《中(zhong)(zhong)國哲學(xue)史(shi)大綱》,商務印書(shu)(shu)館2011年,第(di)318—319頁)。從(cong)理(li)(li)(li)性(xing)(xing)(xing)(xing)(xing)(xing)化的(de)(de)(de)(de)(de)(de)角度考慮,所(suo)謂(wei)“神(shen)(shen)秘(mi)(mi)(mi)(mi)數(shu)字”以(yi)(yi)(yi)至通(tong)常所(suo)謂(wei)漢(han)代(dai)“讖緯神(shen)(shen)學(xue)”,都是(shi)以(yi)(yi)(yi)數(shu)的(de)(de)(de)(de)(de)(de)計算所(suo)顯(xian)示(shi)的(de)(de)(de)(de)(de)(de)絕對(dui)(dui)必(bi)然(ran)性(xing)(xing)(xing)(xing)(xing)(xing)作(zuo)(zuo)為(wei)對(dui)(dui)于天道(dao)(dao)的(de)(de)(de)(de)(de)(de)真切把握。質言(yan)(yan)之(zhi),正是(shi)以(yi)(yi)(yi)“神(shen)(shen)秘(mi)(mi)(mi)(mi)數(shu)字”為(wei)基(ji)數(shu)進行(xing)計算,乃是(shi)將(jiang)不可(ke)知(zhi)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de)原始巫術(shu)信仰(yang)與(yu)(yu)(yu)理(li)(li)(li)性(xing)(xing)(xing)(xing)(xing)(xing)化的(de)(de)(de)(de)(de)(de)絕對(dui)(dui)必(bi)然(ran)性(xing)(xing)(xing)(xing)(xing)(xing)追(zhui)尋熔鑄為(wei)一(yi)體。例如《漢(han)書(shu)(shu)·律歷(li)志》:“十六兩成斤者,四時乘四方(fang)之(zhi)象(xiang)也(ye)。”“十六”是(shi)由兩個“神(shen)(shen)秘(mi)(mi)(mi)(mi)數(shu)字”“四時”與(yu)(yu)(yu)“四方(fang)”作(zuo)(zuo)為(wei)基(ji)數(shu)進行(xing)絕對(dui)(dui)性(xing)(xing)(xing)(xing)(xing)(xing)、必(bi)然(ran)性(xing)(xing)(xing)(xing)(xing)(xing)計算的(de)(de)(de)(de)(de)(de)結果。《后漢(han)書(shu)(shu)·鄭(zheng)玄(xuan)列傳》:“會(馬(ma))融集諸生(sheng)考論圖緯,聞(wen)玄(xuan)善籌,乃召見于樓(lou)上(shang)。”考論圖緯而(er)以(yi)(yi)(yi)善籌召鄭(zheng)玄(xuan),正可(ke)見神(shen)(shen)秘(mi)(mi)(mi)(mi)數(shu)字必(bi)須計算。在《老子》諸本章數(shu)歧異中(zhong)(zhong),我們應當(dang)關注的(de)(de)(de)(de)(de)(de)不是(shi)每一(yi)種章數(shu)具有何種神(shen)(shen)秘(mi)(mi)(mi)(mi)性(xing)(xing)(xing)(xing)(xing)(xing),而(er)是(shi)章數(shu)之(zhi)獲取對(dui)(dui)于絕對(dui)(dui)性(xing)(xing)(xing)(xing)(xing)(xing)必(bi)然(ran)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de)追(zhui)尋。也(ye)就(jiu)(jiu)是(shi)說,以(yi)(yi)(yi)數(shu)的(de)(de)(de)(de)(de)(de)計算來追(zhui)尋絕對(dui)(dui)性(xing)(xing)(xing)(xing)(xing)(xing)必(bi)然(ran)性(xing)(xing)(xing)(xing)(xing)(xing),并以(yi)(yi)(yi)數(shu)的(de)(de)(de)(de)(de)(de)計算的(de)(de)(de)(de)(de)(de)得數(shu)作(zuo)(zuo)為(wei)《老子》的(de)(de)(de)(de)(de)(de)章數(shu)。
北大(da)漢簡(jian)《老(lao)子》共七(qi)(qi)(qi)十(shi)(shi)(shi)(shi)七(qi)(qi)(qi)章(zhang)(zhang),其(qi)(qi)中(zhong)(zhong)上經四(si)(si)十(shi)(shi)(shi)(shi)四(si)(si)章(zhang)(zhang),下經三(san)(san)(san)十(shi)(shi)(shi)(shi)三(san)(san)(san)章(zhang)(zhang)。丁(ding)四(si)(si)新先生將“七(qi)(qi)(qi)十(shi)(shi)(shi)(shi)七(qi)(qi)(qi)”“四(si)(si)十(shi)(shi)(shi)(shi)四(si)(si)”“三(san)(san)(san)十(shi)(shi)(shi)(shi)三(san)(san)(san)”還(huan)原(yuan)為(wei)(wei)“七(qi)(qi)(qi)”“四(si)(si)”“三(san)(san)(san)”(丁(ding)四(si)(si)新:《漢簡(jian)本〈老(lao)子〉總(zong)章(zhang)(zhang)數(shu)(shu)(shu)(shu)及上下經章(zhang)(zhang)數(shu)(shu)(shu)(shu)的組織(zhi)原(yuan)理和數(shu)(shu)(shu)(shu)理法則——一(yi)(yi)(yi)種可(ke)能性的研究》,載陳鼓應(ying)主編:《道家文化(hua)研究》第(di)三(san)(san)(san)十(shi)(shi)(shi)(shi)輯(ji),中(zhong)(zhong)華(hua)書(shu)局2016年(nian),第(di)136—137頁),我們(men)深(shen)表贊同。但是(shi)(shi)我們(men)認(ren)為(wei)(wei)完整的還(huan)原(yuan)過程應(ying)該是(shi)(shi)“七(qi)(qi)(qi)十(shi)(shi)(shi)(shi)七(qi)(qi)(qi)”“四(si)(si)十(shi)(shi)(shi)(shi)四(si)(si)”“三(san)(san)(san)十(shi)(shi)(shi)(shi)三(san)(san)(san)”除以“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”得到“七(qi)(qi)(qi)”“四(si)(si)”“三(san)(san)(san)”,亦即77=11×(3+4)。“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”也當來自“天地(di)(di)(di)之(zhi)(zhi)(zhi)數(shu)(shu)(shu)(shu)”。《周易·系辭(ci)傳(chuan)》上:“天數(shu)(shu)(shu)(shu)五(wu)(wu),地(di)(di)(di)數(shu)(shu)(shu)(shu)五(wu)(wu),五(wu)(wu)位相(xiang)得而(er)各(ge)有(you)(you)合(he)。天數(shu)(shu)(shu)(shu)二(er)十(shi)(shi)(shi)(shi)有(you)(you)五(wu)(wu),地(di)(di)(di)數(shu)(shu)(shu)(shu)三(san)(san)(san)十(shi)(shi)(shi)(shi),凡天地(di)(di)(di)之(zhi)(zhi)(zhi)數(shu)(shu)(shu)(shu)五(wu)(wu)十(shi)(shi)(shi)(shi)有(you)(you)五(wu)(wu),此所以成變化(hua)而(er)行鬼(gui)神(shen)也。”又曰(yue):“天一(yi)(yi)(yi)地(di)(di)(di)二(er),天三(san)(san)(san)地(di)(di)(di)四(si)(si),天五(wu)(wu)地(di)(di)(di)六(liu),天七(qi)(qi)(qi)地(di)(di)(di)八(ba),天九(jiu)地(di)(di)(di)十(shi)(shi)(shi)(shi)。”“天地(di)(di)(di)之(zhi)(zhi)(zhi)數(shu)(shu)(shu)(shu)五(wu)(wu)十(shi)(shi)(shi)(shi)有(you)(you)五(wu)(wu)”即以“天數(shu)(shu)(shu)(shu)一(yi)(yi)(yi)三(san)(san)(san)五(wu)(wu)七(qi)(qi)(qi)九(jiu)”加(jia)“地(di)(di)(di)數(shu)(shu)(shu)(shu)二(er)四(si)(si)六(liu)八(ba)十(shi)(shi)(shi)(shi)”之(zhi)(zhi)(zhi)和。其(qi)(qi)具體加(jia)法,考(kao)《漢書(shu)·律歷志》:“天之(zhi)(zhi)(zhi)中(zhong)(zhong)數(shu)(shu)(shu)(shu)五(wu)(wu),地(di)(di)(di)之(zhi)(zhi)(zhi)中(zhong)(zhong)數(shu)(shu)(shu)(shu)六(liu),而(er)二(er)者(zhe)為(wei)(wei)合(he)。”則至少在(zai)漢代有(you)(you)一(yi)(yi)(yi)種算(suan)法是(shi)(shi)以“天數(shu)(shu)(shu)(shu)五(wu)(wu)”加(jia)“地(di)(di)(di)數(shu)(shu)(shu)(shu)六(liu)”得“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”。由是(shi)(shi)可(ke)以類推“天數(shu)(shu)(shu)(shu)一(yi)(yi)(yi)”加(jia)“地(di)(di)(di)數(shu)(shu)(shu)(shu)十(shi)(shi)(shi)(shi)”得“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”等;五(wu)(wu)“天數(shu)(shu)(shu)(shu)”分別與五(wu)(wu)“地(di)(di)(di)數(shu)(shu)(shu)(shu)”相(xiang)加(jia),各(ge)得“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”;五(wu)(wu)個“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”相(xiang)加(jia)得“天地(di)(di)(di)之(zhi)(zhi)(zhi)數(shu)(shu)(shu)(shu)五(wu)(wu)十(shi)(shi)(shi)(shi)有(you)(you)五(wu)(wu)”。以“一(yi)(yi)(yi)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”編纂之(zhi)(zhi)(zhi)典籍,如《九(jiu)歌(ge)》雖名(ming)曰(yue)“九(jiu)”卻實為(wei)(wei)十(shi)(shi)(shi)(shi)一(yi)(yi)(yi)篇。北大(da)漢簡(jian)《老(lao)子》之(zhi)(zhi)(zhi)“七(qi)(qi)(qi)十(shi)(shi)(shi)(shi)七(qi)(qi)(qi)”章(zhang)(zhang)的算(suan)法為(wei)(wei):77=(6+5)×(3+4)。
由于今(jin)本《老子指歸(gui)》已(yi)經(jing)(jing)(jing)殘缺,我們對于其(qi)全書概貌的(de)了解主要依(yi)(yi)靠其(qi)書所附(fu)《君平說二(er)經(jing)(jing)(jing)目》:“昔者(zhe)老子之(zhi)作也,變化所由,道德(de)為(wei)(wei)母,效經(jing)(jing)(jing)列首(shou),天(tian)(tian)地(di)為(wei)(wei)象,上(shang)(shang)經(jing)(jing)(jing)配天(tian)(tian),下(xia)經(jing)(jing)(jing)配地(di)。陰(yin)道八(ba)(ba),陽(yang)(yang)(yang)道九,以(yi)(yi)陰(yin)行(xing)陽(yang)(yang)(yang),故七十有二(er)首(shou)。以(yi)(yi)陽(yang)(yang)(yang)行(xing)陰(yin),故分(fen)為(wei)(wei)上(shang)(shang)下(xia)。以(yi)(yi)五(wu)行(xing)八(ba)(ba),故上(shang)(shang)經(jing)(jing)(jing)四(si)(si)十而更始;以(yi)(yi)四(si)(si)行(xing)八(ba)(ba),故下(xia)經(jing)(jing)(jing)三十有二(er)而終(zhong)矣。”丁(ding)四(si)(si)新解釋道:“嚴(yan)遵(zun)本總章(zhang)數設定的(de)依(yi)(yi)據(ju)是‘以(yi)(yi)陰(yin)行(xing)陽(yang)(yang)(yang)’,即(ji)以(yi)(yi)陰(yin)八(ba)(ba)乘(cheng)以(yi)(yi)陽(yang)(yang)(yang)九而得72首(shou);其(qi)上(shang)(shang)下(xia)篇(pian)(pian)章(zhang)數設定的(de)依(yi)(yi)據(ju)是‘以(yi)(yi)陽(yang)(yang)(yang)行(xing)陰(yin)’,即(ji)將(jiang)陽(yang)(yang)(yang)九先(xian)分(fen)為(wei)(wei)五(wu)、四(si)(si)兩(liang)數,再(zai)分(fen)別乘(cheng)以(yi)(yi)陰(yin)八(ba)(ba),而得上(shang)(shang)篇(pian)(pian)40首(shou)、下(xia)篇(pian)(pian)32首(shou)。從總體上(shang)(shang)看,嚴(yan)遵(zun)本章(zhang)數的(de)設定涉及天(tian)(tian)地(di)(上(shang)(shang)下(xia))、陰(yin)陽(yang)(yang)(yang)的(de)概念(nian),而以(yi)(yi)‘一陰(yin)一陽(yang)(yang)(yang)之(zhi)謂道’為(wei)(wei)原理(li)。”(丁(ding)四(si)(si)新:《早期〈老子〉文(wen)本的(de)演變、成(cheng)(cheng)型(xing)與定型(xing)——以(yi)(yi)出土(tu)簡(jian)帛本為(wei)(wei)依(yi)(yi)據(ju)》,載《中州(zhou)學(xue)刊(kan)》2014年第10期)八(ba)(ba),《漢(han)書·律歷(li)志》:“人者(zhe),繼(ji)天(tian)(tian)順地(di),序氣成(cheng)(cheng)物,統(tong)八(ba)(ba)卦,調八(ba)(ba)風,理(li)八(ba)(ba)政,正八(ba)(ba)節,諧八(ba)(ba)音,舞(wu)八(ba)(ba)佾(yi),監八(ba)(ba)方,被八(ba)(ba)荒,以(yi)(yi)終(zhong)天(tian)(tian)地(di)之(zhi)功。”嚴(yan)遵(zun)本《老子》之(zhi)“七十二(er)”章(zhang)的(de)算(suan)法為(wei)(wei):72=8×(4+5)。
河上(shang)(shang)(shang)公《章(zhang)句》本(ben)八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)章(zhang),上(shang)(shang)(shang)經(jing)(jing)(jing)三(san)(san)十(shi)(shi)(shi)(shi)(shi)(shi)七章(zhang),下(xia)經(jing)(jing)(jing)四(si)(si)(si)(si)(si)十(shi)(shi)(shi)(shi)(shi)(shi)四(si)(si)(si)(si)(si)章(zhang)。其章(zhang)數(shu)(shu)(shu)之義,現存最(zui)早的(de)解釋見日本(ben)慶長(chang)間(jian)活字(zi)本(ben)河上(shang)(shang)(shang)公《章(zhang)句》卷首舊題葛洪(hong)《老子經(jing)(jing)(jing)序》,其中云(yun):“于是(shi)論(lun)證著上(shang)(shang)(shang)下(xia)二篇(pian)(pian)(pian)八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)章(zhang)五(wu)千余言(yan)……天以(yi)(yi)四(si)(si)(si)(si)(si)時生,地以(yi)(yi)五(wu)行(xing)成(cheng)。以(yi)(yi)四(si)(si)(si)(si)(si)乘九(jiu)(jiu)(jiu)(jiu)(jiu),故(gu)(gu)三(san)(san)十(shi)(shi)(shi)(shi)(shi)(shi)六(liu),以(yi)(yi)應禽獸萬物之剛(gang)柔;以(yi)(yi)五(wu)乘九(jiu)(jiu)(jiu)(jiu)(jiu),故(gu)(gu)四(si)(si)(si)(si)(si)十(shi)(shi)(shi)(shi)(shi)(shi)五(wu),以(yi)(yi)應九(jiu)(jiu)(jiu)(jiu)(jiu)宮五(wu)方、四(si)(si)(si)(si)(si)維九(jiu)(jiu)(jiu)(jiu)(jiu)州,故(gu)(gu)法備。因而九(jiu)(jiu)(jiu)(jiu)(jiu)之,故(gu)(gu)九(jiu)(jiu)(jiu)(jiu)(jiu)九(jiu)(jiu)(jiu)(jiu)(jiu)八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi),數(shu)(shu)(shu)之極(ji)也。”關于此(ci)序標題、作者及時代(dai)等問題爭(zheng)議頗多,但至遲不(bu)晚于六(liu)朝。南宋謝守灝《混元(yuan)圣紀(ji)》卷三(san)(san):“葛洪(hong)等不(bu)能改(gai)此(ci)本(ben)章(zhang),遂滅《道經(jing)(jing)(jing)》‘常無為’一(yi)(yi)(yi)章(zhang),繼《德經(jing)(jing)(jing)》之末。乃(nai)曰(yue):‘天以(yi)(yi)四(si)(si)(si)(si)(si)時成(cheng),故(gu)(gu)上(shang)(shang)(shang)經(jing)(jing)(jing)四(si)(si)(si)(si)(si)九(jiu)(jiu)(jiu)(jiu)(jiu)三(san)(san)十(shi)(shi)(shi)(shi)(shi)(shi)六(liu)章(zhang);地以(yi)(yi)五(wu)行(xing)成(cheng),故(gu)(gu)下(xia)經(jing)(jing)(jing)五(wu)九(jiu)(jiu)(jiu)(jiu)(jiu)四(si)(si)(si)(si)(si)十(shi)(shi)(shi)(shi)(shi)(shi)五(wu)章(zhang)。通上(shang)(shang)(shang)下(xia)經(jing)(jing)(jing),以(yi)(yi)應九(jiu)(jiu)(jiu)(jiu)(jiu)九(jiu)(jiu)(jiu)(jiu)(jiu)之數(shu)(shu)(shu)。’”正是(shi)指(zhi)此(ci)而言(yan)。舊題葛洪(hong)《序》認為分篇(pian)(pian)(pian)章(zhang)數(shu)(shu)(shu)不(bu)妥,不(bu)符(fu)“天四(si)(si)(si)(si)(si)地五(wu)”合(he)為“九(jiu)(jiu)(jiu)(jiu)(jiu)”之義,故(gu)(gu)而將《道經(jing)(jing)(jing)》減(jian)一(yi)(yi)(yi)加(jia)至《德經(jing)(jing)(jing)》。《后漢書》卷五(wu)十(shi)(shi)(shi)(shi)(shi)(shi)九(jiu)(jiu)(jiu)(jiu)(jiu)《張(zhang)衡(heng)列傳(chuan)(chuan)》衡(heng)上(shang)(shang)(shang)疏曰(yue):“且《河洛》《六(liu)藝》,篇(pian)(pian)(pian)錄(lu)已定,后人皮(pi)傅(fu),無所(suo)容篡。”李賢注(zhu)引《張(zhang)衡(heng)集》上(shang)(shang)(shang)事云(yun):“《河洛》五(wu)九(jiu)(jiu)(jiu)(jiu)(jiu),《六(liu)藝》四(si)(si)(si)(si)(si)九(jiu)(jiu)(jiu)(jiu)(jiu),謂(wei)八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)篇(pian)(pian)(pian)也。”則東漢已有(you)如此(ci)算法。由(you)此(ci)恰可見早期道教對于《老子》八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)之章(zhang)數(shu)(shu)(shu)的(de)解釋,就是(shi)以(yi)(yi)陽數(shu)(shu)(shu)之極(ji)的(de)“九(jiu)(jiu)(jiu)(jiu)(jiu)”自乘乃(nai)得“八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”,即81=9×9。西漢前期,書以(yi)(yi)“八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)”編成(cheng)者,《史記·田儋列傳(chuan)(chuan)》:“蒯通者,善為長(chang)短說(shuo),論(lun)戰國之權變為八(ba)(ba)(ba)十(shi)(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)首。”
實質上,《老(lao)子(zi)》章數(shu)(shu)(shu)達致的(de)數(shu)(shu)(shu)的(de)演(yan)(yan)算(suan)(suan)的(de)必然(ran)(ran)性,并(bing)非必然(ran)(ran)性自身,而僅僅停留(liu)于(yu)數(shu)(shu)(shu)的(de)演(yan)(yan)算(suan)(suan)對(dui)(dui)于(yu)必然(ran)(ran)性的(de)借用。亦即(ji)編(bian)纂(zuan)者并(bing)不追問數(shu)(shu)(shu)的(de)演(yan)(yan)算(suan)(suan)何以(yi)有此結果,而只是關注數(shu)(shu)(shu)的(de)演(yan)(yan)算(suan)(suan)得到如此結果。他們(men)甚至(zhi)可以(yi)不必掌握(wo)數(shu)(shu)(shu)學理論知識,只需要具備一定(ding)計算(suan)(suan)能(neng)力即(ji)可——數(shu)(shu)(shu)的(de)演(yan)(yan)算(suan)(suan)的(de)絕對(dui)(dui)性的(de)必然(ran)(ran)性何以(yi)是必然(ran)(ran)的(de),編(bian)纂(zuan)者懵然(ran)(ran)無知。于(yu)是賦予(yu)章數(shu)(shu)(shu)本身以(yi)神秘性,正(zheng)是在(zai)數(shu)(shu)(shu)的(de)演(yan)(yan)算(suan)(suan)的(de)絕對(dui)(dui)性必然(ran)(ran)性追尋(xun)被遺(yi)忘之后(hou),對(dui)(dui)于(yu)這一遺(yi)忘之遮掩。
(作者:李若暉,系中國人民(min)大學國學院教(jiao)授(shou))
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