趙惠文王六(liu)年(前293年),封公子趙勝為平原君(jun)。平原君(jun)喜好名(ming)家論辨(bian)之(zhi)言,公孫龍遂為平原君(jun)的門客。
趙惠文(wen)王(wang)(wang)十(shi)五年(前284年),燕(yan)(yan)(yan)昭(zhao)王(wang)(wang)欲攻齊國,公孫龍帶領弟子,從趙國趕到燕(yan)(yan)(yan)國,力圖勸其“偃兵(bing)”。燕(yan)(yan)(yan)王(wang)(wang)滿(man)口(kou)答應,公孫龍卻表(biao)示不可相信,說道:當(dang)初大(da)(da)王(wang)(wang)招納欲破齊、能破齊的(de)“天下之士(shi)”到燕(yan)(yan)(yan)國來,后(hou)來終于破齊。而今“諸侯之士(shi)在大(da)(da)王(wang)(wang)之本朝者(zhe),盡善(shan)用兵(bing)者(zhe)”,所以(yi)我認為大(da)(da)王(wang)(wang)不會偃兵(bing)。他用這種“循實(shi)則名”的(de)方法猜透了燕(yan)(yan)(yan)王(wang)(wang)的(de)真實(shi)用心,使燕(yan)(yan)(yan)王(wang)(wang)無言以(yi)對(dui)。
十六年(nian)(前(qian)283年(nian)),秦(qin)(qin)國(guo)與(yu)趙國(guo)盟會締約:“秦(qin)(qin)之(zhi)(zhi)所欲為,趙助之(zhi)(zhi);趙之(zhi)(zhi)所欲為,秦(qin)(qin)助之(zhi)(zhi)。”答(da)應(ying)相互援(yuan)助。不久(jiu),秦(qin)(qin)興兵(bing)攻(gong)(gong)魏(wei),趙欲救魏(wei)。秦(qin)(qin)王(wang)使人責備趙惠文王(wang)不遵(zun)守(shou)盟約。趙王(wang)將此事告(gao)知(zhi)平原(yuan)君(jun)。公孫(sun)龍向(xiang)平原(yuan)君(jun)建(jian)議(yi)說(shuo):趙也(ye)可以派遣使者去(qu)責備秦(qin)(qin)王(wang)說(shuo),趙國(guo)想援(yuan)救魏(wei)國(guo),秦(qin)(qin)國(guo)卻攻(gong)(gong)打魏(wei)國(guo),是秦(qin)(qin)國(guo)首先(xian)違背了盟約。
十(shi)九年(前280年),公(gong)孫(sun)龍(long)又(you)與趙惠(hui)文王(wang)論偃兵之(zhi)(zhi)事。趙王(wang)問公(gong)孫(sun)龍(long)說:“寡人事偃兵十(shi)余年矣(yi),而(er)(er)不(bu)成,兵不(bu)可偃乎?”公(gong)孫(sun)龍(long)回答說:“偃兵之(zhi)(zhi)意,兼(jian)愛(ai)(ai)天下之(zhi)(zhi)心也。兼(jian)愛(ai)(ai)天下,不(bu)可以虛(xu)名為也,必有其實。”并指出趙惠(hui)文王(wang)當秦得地(di)而(er)(er)縞(gao)素布(bu)總,齊亡地(di)而(er)(er)加(jia)膳置酒(jiu),并不(bu)真正具有兼(jian)愛(ai)(ai)之(zhi)(zhi)心,故不(bu)能行(xing)偃兵之(zhi)(zhi)實。
趙(zhao)孝成王(wang)九年(前(qian)257年),秦兵(bing)攻趙(zhao),圍邯鄲。平原(yuan)君(jun)(jun)使人(ren)向(xiang)魏國(guo)求(qiu)(qiu)救(jiu)。信陵君(jun)(jun)率(lv)兵(bing)救(jiu)趙(zhao),邯鄲得以(yi)保(bao)存。虞卿為平原(yuan)君(jun)(jun)向(xiang)趙(zhao)王(wang)請封(feng)。公孫龍連夜駕車入見平原(yuan)君(jun)(jun),認為此(ci)舉(ju)甚不(bu)可行,指出“王(wang)舉(ju)君(jun)(jun)而(er)相趙(zhao),割東武(wu)城而(er)封(feng)君(jun)(jun)者”并(bing)不(bu)是(shi)因為平原(yuan)君(jun)(jun)的(de)才智能力為趙(zhao)國(guo)所獨(du)有的(de),而(er)是(shi)因為平原(yuan)君(jun)(jun)是(shi)趙(zhao)王(wang)親戚(qi)(qi)的(de)緣故。而(er)“一解國(guo)患,欲求(qiu)(qiu)益地,是(shi)親戚(qi)(qi)受(shou)封(feng)而(er)國(guo)人(ren)計功也”,即計國(guo)人(ren)之功于(yu)親戚(qi)(qi)名(ming)下。因此(ci)建議(yi)(yi)平原(yuan)君(jun)(jun)不(bu)要(yao)受(shou)封(feng),平原(yuan)君(jun)(jun)聽從了公孫龍的(de)建議(yi)(yi),并(bing)由此(ci)對其益加看重。
他可能(neng)較長時間(jian)作平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)的門客(ke)。《史記(ji)·平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)虞卿(qing)列傳(chuan)》說(shuo)(shuo)(shuo)(shuo)(shuo),“平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)厚待公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)”。約于(yu)公(gong)(gong)(gong)(gong)(gong)元前279年(nian)至(zhi)前248年(nian)間(jian),公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)曾從趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)帶領弟子到燕(yan)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo),《呂氏春(chun)秋·應(ying)言》載,是(shi)為(wei)了(le)說(shuo)(shuo)(shuo)(shuo)(shuo)燕(yan)昭(zhao)王(wang)(wang)以“偃兵(bing)(bing)”。燕(yan)王(wang)(wang)雖然(ran)表(biao)示同意(yi),公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)卻當面對(dui)燕(yan)王(wang)(wang)說(shuo)(shuo)(shuo)(shuo)(shuo)。“諸侯之(zhi)(zhi)士在(zai)(zai)大(da)王(wang)(wang)之(zhi)(zhi)本朝者(zhe),盡善用兵(bing)(bing)者(zhe)”,所(suo)以我認為(wei)大(da)王(wang)(wang)不(bu)(bu)會偃兵(bing)(bing),燕(yan)昭(zhao)王(wang)(wang)無(wu)(wu)言應(ying)答。公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)又曾游魏(wei)(wei),與(yu)公(gong)(gong)(gong)(gong)(gong)子牟論(lun)(lun)(lun)(lun)學。在(zai)(zai)趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo),《呂氏春(chun)秋·審(shen)應(ying)覽》載,公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)曾與(yu)趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)惠文王(wang)(wang)論(lun)(lun)(lun)(lun)偃兵(bing)(bing)。趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)王(wang)(wang)問公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)說(shuo)(shuo)(shuo)(shuo)(shuo):“寡人(ren)(ren)事偃兵(bing)(bing)十余年(nian)矣,而(er)不(bu)(bu)成(cheng),兵(bing)(bing)不(bu)(bu)可偃乎?”公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)回答說(shuo)(shuo)(shuo)(shuo)(shuo):“趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)的藺(lin)、離石(shi)兩地被(bei)秦(qin)侵占,王(wang)(wang)就穿上喪國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)的服(fu)裝,縞素(su)布總;東攻(gong)(gong)齊得城,而(er)王(wang)(wang)加(jia)膳(shan)置酒(jiu),以示慶祝。這(zhe)怎能(neng)會偃兵(bing)(bing)?”《呂氏春(chun)秋·淫(yin)辭》說(shuo)(shuo)(shuo)(shuo)(shuo):秦(qin)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)跟趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)訂立盟(meng)約:“秦(qin)之(zhi)(zhi)所(suo)欲(yu)為(wei),趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)助之(zhi)(zhi);趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)之(zhi)(zhi)所(suo)欲(yu)為(wei),秦(qin)助之(zhi)(zhi)。”過(guo)了(le)不(bu)(bu)久。秦(qin)興兵(bing)(bing)攻(gong)(gong)魏(wei)(wei),趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)欲(yu)救魏(wei)(wei)。秦(qin)王(wang)(wang)使(shi)(shi)人(ren)(ren)責備趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)惠文王(wang)(wang)不(bu)(bu)遵守盟(meng)約。趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)王(wang)(wang)將(jiang)這(zhe)件事告訴(su)平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)。公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)給平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)出主(zhu)意(yi)說(shuo)(shuo)(shuo)(shuo)(shuo),趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)可以派遣(qian)使(shi)(shi)者(zhe)去責備秦(qin)王(wang)(wang)說(shuo)(shuo)(shuo)(shuo)(shuo),秦(qin)不(bu)(bu)幫助趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)救魏(wei)(wei),也是(shi)違背盟(meng)約。趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)孝成(cheng)王(wang)(wang)九年(nian)(公(gong)(gong)(gong)(gong)(gong)元前257年(nian)),秦(qin)兵(bing)(bing)攻(gong)(gong)趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao),平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)使(shi)(shi)人(ren)(ren)向魏(wei)(wei)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)求(qiu)救。信(xin)陵(ling)君(jun)(jun)(jun)(jun)(jun)率兵(bing)(bing)救趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao),邯鄲得以保(bao)存(cun)。趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)的虞卿(qing)欲(yu)以信(xin)陵(ling)君(jun)(jun)(jun)(jun)(jun)之(zhi)(zhi)存(cun)邯鄲為(wei)平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)請(qing)求(qiu)增加(jia)封(feng)地。公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)聽說(shuo)(shuo)(shuo)(shuo)(shuo)這(zhe)件事,勸阻平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)說(shuo)(shuo)(shuo)(shuo)(shuo):“君(jun)(jun)(jun)(jun)(jun)無(wu)(wu)覆(fu)軍殺將(jiang)之(zhi)(zhi)功,而(er)封(feng)以東武城。趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)豪杰(jie)之(zhi)(zhi)士,多(duo)在(zai)(zai)君(jun)(jun)(jun)(jun)(jun)之(zhi)(zhi)右(you),而(er)君(jun)(jun)(jun)(jun)(jun)為(wei)相(xiang)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)者(zhe)以親故。夫君(jun)(jun)(jun)(jun)(jun)封(feng)以東武城,不(bu)(bu)讓(rang)無(wu)(wu)功,佩趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)相(xiang)印,不(bu)(bu)辭無(wu)(wu)能(neng),一解(jie)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)患,欲(yu)求(qiu)益地,是(shi)親戚受封(feng),而(er)國(guo)(guo)(guo)(guo)(guo)(guo)(guo)(guo)人(ren)(ren)計功也。為(wei)君(jun)(jun)(jun)(jun)(jun)計者(zhe),不(bu)(bu)如勿受便。”平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)接受了(le)公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)的意(yi)見(jian),沒有接受封(feng)地。公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)善于(yu)辯論(lun)(lun)(lun)(lun)。《公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)子·跡府》說(shuo)(shuo)(shuo)(shuo)(shuo),公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)與(yu)孔穿在(zai)(zai)平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)家(jia)相(xiang)會,談(tan)辯公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)的“白(bai)馬(ma)非(fei)馬(ma)”。晚(wan)年(nian),齊使(shi)(shi)鄒(zou)衍過(guo)趙(zhao)(zhao)(zhao)(zhao)(zhao)(zhao),平(ping)原(yuan)(yuan)君(jun)(jun)(jun)(jun)(jun)使(shi)(shi)與(yu)公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)論(lun)(lun)(lun)(lun)“白(bai)馬(ma)非(fei)馬(ma)”之(zhi)(zhi)說(shuo)(shuo)(shuo)(shuo)(shuo)。公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)由(you)是(shi)遂詘,后(hou)不(bu)(bu)知所(suo)終。公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)的主(zhu)要思想,保(bao)存(cun)在(zai)(zai)《公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)子》一書中。《漢書·藝文志(zhi)》名家(jia)有《公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)子》十四篇。今存(cun)六篇。《跡府》,是(shi)后(hou)人(ren)(ren)匯集公(gong)(gong)(gong)(gong)(gong)孫(sun)(sun)(sun)龍(long)(long)(long)的生平(ping)言行寫成(cheng)的傳(chuan)略。其余五篇是(shi):《白(bai)馬(ma)論(lun)(lun)(lun)(lun)》、《指物論(lun)(lun)(lun)(lun)》、《通變論(lun)(lun)(lun)(lun)》、《堅白(bai)論(lun)(lun)(lun)(lun)》、《名實論(lun)(lun)(lun)(lun)》,其中以《白(bai)馬(ma)論(lun)(lun)(lun)(lun)》最著名。
公孫龍的(de)哲學思想(xiang),《淮南子》說,公孫龍"別(bie)同異,離堅(jian)白"。
他與惠施的"合同異(yi)"說正相反(fan),完全脫離感(gan)性認識,只強調概念的邏輯(ji)分(fen)析,具有十分(fen)濃厚(hou)的形而上(shang)(shang)學(xue)特色。但在邏輯(ji)學(xue)上(shang)(shang),他的貢(gong)獻(xian)是值(zhi)得(de)重視的。
公(gong)孫(sun)龍(long)的(de)(de)(de)(de)"離(li)(li)(li)(li)(li)堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)"學(xue)(xue)說(shuo)是(shi)(shi)(shi)(shi)從對(dui)"堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)石(shi)"的(de)(de)(de)(de)分析出發的(de)(de)(de)(de)。《公(gong)孫(sun)龍(long)子·堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)論(lun)》說(shuo):"視不(bu)(bu)(bu)(bu)(bu)(bu)得其(qi)所堅(jian)(jian)(jian)(jian)而得其(qi)所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)者,無(wu)堅(jian)(jian)(jian)(jian)也(ye);拊不(bu)(bu)(bu)(bu)(bu)(bu)得其(qi)所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)而得其(qi)所堅(jian)(jian)(jian)(jian)者,無(wu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)也(ye)。"即人們用眼睛看(kan),不(bu)(bu)(bu)(bu)(bu)(bu)知道它(ta)是(shi)(shi)(shi)(shi)堅(jian)(jian)(jian)(jian)硬(ying)的(de)(de)(de)(de),而知道石(shi)是(shi)(shi)(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se)的(de)(de)(de)(de),這(zhe)(zhe)就(jiu)是(shi)(shi)(shi)(shi)沒(mei)有堅(jian)(jian)(jian)(jian)硬(ying);用手摸不(bu)(bu)(bu)(bu)(bu)(bu)知道它(ta)是(shi)(shi)(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se),而知道它(ta)是(shi)(shi)(shi)(shi)堅(jian)(jian)(jian)(jian)硬(ying)的(de)(de)(de)(de),這(zhe)(zhe)就(jiu)是(shi)(shi)(shi)(shi)沒(mei)有白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se)。在(zai)(zai)前一(yi)(yi)(yi)種情況(kuang)下(xia),堅(jian)(jian)(jian)(jian)硬(ying)藏(zang)(zang)了(le)起來。在(zai)(zai)后一(yi)(yi)(yi)種情況(kuang)下(xia),白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)藏(zang)(zang)了(le)起來。這(zhe)(zhe)叫作"自藏(zang)(zang)"。《堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)論(lun)》又說(shuo):"得其(qi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai),得其(qi)堅(jian)(jian)(jian)(jian),見(jian)(jian)與不(bu)(bu)(bu)(bu)(bu)(bu)見(jian)(jian)離(li)(li)(li)(li)(li)。不(bu)(bu)(bu)(bu)(bu)(bu)見(jian)(jian)離(li)(li)(li)(li)(li)一(yi)(yi)(yi)。一(yi)(yi)(yi)不(bu)(bu)(bu)(bu)(bu)(bu)相盈,故(gu)離(li)(li)(li)(li)(li)離(li)(li)(li)(li)(li)也(ye)者,藏(zang)(zang)也(ye)。"看(kan)到它(ta)的(de)(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se),摸到它(ta)的(de)(de)(de)(de)堅(jian)(jian)(jian)(jian)硬(ying),有"見(jian)(jian)與不(bu)(bu)(bu)(bu)(bu)(bu)見(jian)(jian)"的(de)(de)(de)(de)情況(kuang),這(zhe)(zhe)就(jiu)叫離(li)(li)(li)(li)(li),因(yin)(yin)為石(shi)與堅(jian)(jian)(jian)(jian)、白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)不(bu)(bu)(bu)(bu)(bu)(bu)能(neng)互相包(bao)含(han),所以(yi)就(jiu)分離(li)(li)(li)(li)(li)了(le)。分離(li)(li)(li)(li)(li)了(le)也(ye)就(jiu)是(shi)(shi)(shi)(shi)藏(zang)(zang)起來了(le)。他(ta)認為,"天下(xia)未有若堅(jian)(jian)(jian)(jian),而堅(jian)(jian)(jian)(jian)藏(zang)(zang)"。又說(shuo):"若白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)者必(bi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai),則(ze)不(bu)(bu)(bu)(bu)(bu)(bu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)石(shi)物(wu)(wu)而白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)焉。""石(shi)其(qi)無(wu)有,惡取堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)乎?故(gu)離(li)(li)(li)(li)(li)也(ye)。"這(zhe)(zhe)是(shi)(shi)(shi)(shi)說(shuo),不(bu)(bu)(bu)(bu)(bu)(bu)使(shi)(shi)石(shi)與物(wu)(wu)變(bian)堅(jian)(jian)(jian)(jian)硬(ying)而獨(du)(du)立的(de)(de)(de)(de)堅(jian)(jian)(jian)(jian)硬(ying)(即抽象的(de)(de)(de)(de)堅(jian)(jian)(jian)(jian)硬(ying)),天下(xia)是(shi)(shi)(shi)(shi)沒(mei)有的(de)(de)(de)(de)。這(zhe)(zhe)就(jiu)是(shi)(shi)(shi)(shi)說(shuo),堅(jian)(jian)(jian)(jian)硬(ying)藏(zang)(zang)起來了(le)。若白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se)本(ben)身定(ding)是(shi)(shi)(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se)的(de)(de)(de)(de)話,它(ta)就(jiu)不(bu)(bu)(bu)(bu)(bu)(bu)必(bi)通過使(shi)(shi)物(wu)(wu)體(ti)發白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)而表現(xian)自己是(shi)(shi)(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)。他(ta)把本(ben)身是(shi)(shi)(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se)看(kan)成(cheng)一(yi)(yi)(yi)種抽象的(de)(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)(yan)色(se)。它(ta)看(kan)不(bu)(bu)(bu)(bu)(bu)(bu)見(jian)(jian),即是(shi)(shi)(shi)(shi)藏(zang)(zang)起來了(le)。石(shi)頭(tou)假(jia)如沒(mei)有獨(du)(du)立成(cheng)為石(shi)的(de)(de)(de)(de)本(ben)領(ling),又怎(zen)么能(neng)夠形成(cheng)既堅(jian)(jian)(jian)(jian)又白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)的(de)(de)(de)(de)石(shi)呢(ni)?因(yin)(yin)此,他(ta)的(de)(de)(de)(de)結論(lun)是(shi)(shi)(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)與堅(jian)(jian)(jian)(jian)硬(ying)并(bing)不(bu)(bu)(bu)(bu)(bu)(bu)是(shi)(shi)(shi)(shi)結合在(zai)(zai)石(shi)頭(tou)里面,而是(shi)(shi)(shi)(shi)脫離(li)(li)(li)(li)(li)石(shi)頭(tou)獨(du)(du)立存在(zai)(zai)的(de)(de)(de)(de)。這(zhe)(zhe)就(jiu)是(shi)(shi)(shi)(shi)"離(li)(li)(li)(li)(li)堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)"學(xue)(xue)說(shuo)的(de)(de)(de)(de)主要論(lun)點。這(zhe)(zhe)一(yi)(yi)(yi)學(xue)(xue)說(shuo)把事(shi)物(wu)(wu)的(de)(de)(de)(de)各種屬性一(yi)(yi)(yi)方(fang)面與物(wu)(wu)質實體(ti)割裂(lie)開,另一(yi)(yi)(yi)方(fang)面又把它(ta)們一(yi)(yi)(yi)一(yi)(yi)(yi)孤(gu)立起來而否認其(qi)統一(yi)(yi)(yi)性。這(zhe)(zhe)在(zai)(zai)哲學(xue)(xue)上就(jiu)意味著一(yi)(yi)(yi)般不(bu)(bu)(bu)(bu)(bu)(bu)是(shi)(shi)(shi)(shi)存在(zai)(zai)個別之中,而是(shi)(shi)(shi)(shi)可以(yi)脫離(li)(li)(li)(li)(li)個別單獨(du)(du)存在(zai)(zai)的(de)(de)(de)(de)。公(gong)孫(sun)龍(long)"離(li)(li)(li)(li)(li)堅(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)"學(xue)(xue)說(shuo)的(de)(de)(de)(de)詭辯性質,在(zai)(zai)他(ta)的(de)(de)(de)(de)"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)非(fei)馬(ma)"的(de)(de)(de)(de)命(ming)題(ti)中表現(xian)最為明顯(xian)。
"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"是(shi)(shi)古代思想史上的(de)(de)(de)(de)(de)(de)(de)著名命題。公孫(sun)龍(long)的(de)(de)(de)(de)(de)(de)(de)論證是(shi)(shi)這(zhe)樣的(de)(de)(de)(de)(de)(de)(de):"馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)者,所(suo)(suo)以(yi)命形(xing)也(ye);白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)者所(suo)(suo)以(yi)命色(se)也(ye)。命色(se)者非命形(xing)也(ye)。故曰(yue):白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)。"①"馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"一(yi)詞是(shi)(shi)指馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)(de)(de)(de)(de)(de)形(xing)態,凡是(shi)(shi)具有馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)(de)(de)(de)(de)(de)形(xing)態的(de)(de)(de)(de)(de)(de)(de)都(dou)(dou)命名為馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)。"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)"一(yi)詞是(shi)(shi)指白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)的(de)(de)(de)(de)(de)(de)(de)顏(yan)(yan)色(se),凡是(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)色(se)的(de)(de)(de)(de)(de)(de)(de)都(dou)(dou)命名為白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)。"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"是(shi)(shi)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)(de)(de)(de)(de)(de)形(xing)態再加上白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)的(de)(de)(de)(de)(de)(de)(de)顏(yan)(yan)色(se),亦即白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)色(se)的(de)(de)(de)(de)(de)(de)(de)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)。可(ke)見,馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)與(yu)(yu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)是(shi)(shi)兩個(ge)不(bu)(bu)(bu)(bu)(bu)同的(de)(de)(de)(de)(de)(de)(de)概(gai)念,所(suo)(suo)以(yi)他(ta)說(shuo)(shuo):"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"。這(zhe)是(shi)(shi)從(cong)概(gai)念的(de)(de)(de)(de)(de)(de)(de)內涵方(fang)面來論證的(de)(de)(de)(de)(de)(de)(de)。其次,他(ta)又(you)從(cong)"馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"與(yu)(yu)"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"的(de)(de)(de)(de)(de)(de)(de)外(wai)延不(bu)(bu)(bu)(bu)(bu)同來論證。他(ta)說(shuo)(shuo):"求馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma),黃、黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)皆可(ke)致;求白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma),黃、黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)不(bu)(bu)(bu)(bu)(bu)可(ke)致"。②馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)一(yi)詞的(de)(de)(de)(de)(de)(de)(de)外(wai)延包括(kuo)一(yi)切(qie)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)在內,所(suo)(suo)以(yi)黃馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)、黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)都(dou)(dou)在內。白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)(de)(de)(de)(de)(de)外(wai)延僅限(xian)于(yu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)顏(yan)(yan)色(se)的(de)(de)(de)(de)(de)(de)(de)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma),所(suo)(suo)以(yi)黃馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)、黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)不(bu)(bu)(bu)(bu)(bu)在內。馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)與(yu)(yu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)兩個(ge)概(gai)念既然(ran)有這(zhe)樣的(de)(de)(de)(de)(de)(de)(de)差別(bie),所(suo)(suo)以(yi)他(ta)說(shuo)(shuo):"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)"。第三,他(ta)又(you)從(cong)個(ge)別(bie)(個(ge)性(xing)(xing)(xing))與(yu)(yu)一(yi)般(共(gong)(gong)性(xing)(xing)(xing))的(de)(de)(de)(de)(de)(de)(de)關(guan)系來論證。他(ta)說(shuo)(shuo):"白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma),非馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)也(ye)。白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)者,馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)與(yu)(yu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)也(ye),白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)與(yu)(yu)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)也(ye)。故曰(yue):白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)也(ye)。"③這(zhe)是(shi)(shi)說(shuo)(shuo),白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)是(shi)(shi)一(yi)切(qie)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)的(de)(de)(de)(de)(de)(de)(de)共(gong)(gong)性(xing)(xing)(xing),而不(bu)(bu)(bu)(bu)(bu)是(shi)(shi)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma),馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)是(shi)(shi)一(yi)切(qie)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)(de)(de)(de)(de)(de)共(gong)(gong)性(xing)(xing)(xing),而不(bu)(bu)(bu)(bu)(bu)是(shi)(shi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)。白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)指白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)的(de)(de)(de)(de)(de)(de)(de)共(gong)(gong)性(xing)(xing)(xing)加上馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)(de)(de)(de)(de)(de)共(gong)(gong)性(xing)(xing)(xing)。所(suo)(suo)以(yi)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)并不(bu)(bu)(bu)(bu)(bu)是(shi)(shi)馬(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)(ma)。
公(gong)孫龍(long)(long)的(de)(de)論證(zheng)在(zai)邏輯上(shang)和(he)概念分(fen)析上(shang)做出了獨(du)到(dao)的(de)(de)歷(li)史貢獻,但是(shi)他(ta)把(ba)一(yi)(yi)些概念混淆而(er)流入詭辯。他(ta)分(fen)析了馬(ma)(ma)與白馬(ma)(ma)這兩(liang)個(ge)(ge)概念的(de)(de)差(cha)別(bie)、個(ge)(ge)別(bie)與一(yi)(yi)般(ban)的(de)(de)差(cha)別(bie)。但是(shi),他(ta)夸大了這種差(cha)別(bie),把(ba)兩(liang)者完(wan)全(quan)割裂開來(lai),并加以絕(jue)對化;最后達(da)到(dao)否認(ren)(ren)個(ge)(ge)別(bie),只承認(ren)(ren)一(yi)(yi)般(ban),使一(yi)(yi)般(ban)脫(tuo)離個(ge)(ge)別(bie)獨(du)立存在(zai)。這樣,就把(ba)抽(chou)象的(de)(de)概念當成脫(tuo)離具體事物的(de)(de)精神實(shi)體,從而(er)導(dao)致(zhi)了客觀唯心主義的(de)(de)結(jie)論。《莊(zhuang)子(zi)·天(tian)下》還記(ji)載了辯者"二十(shi)一(yi)(yi)事",其中(zhong)一(yi)(yi)些命題(ti)與公(gong)孫龍(long)(long)有關。如"雞三(san)足",又見于《公(gong)孫龍(long)(long)子(zi)·通變(bian)論》:"飛鳥(niao)(niao)之景,未嘗(chang)動也。"也是(shi)屬(shu)于公(gong)孫龍(long)(long)一(yi)(yi)派(pai)的(de)(de)命題(ti)。景即影。這個(ge)(ge)命題(ti)是(shi)說,飛鳥(niao)(niao)的(de)(de)影子(zi)并沒有在(zai)運動。在(zai)每一(yi)(yi)瞬間,飛鳥(niao)(niao)的(de)(de)影子(zi)可以認(ren)(ren)為(wei)是(shi)不動的(de)(de)。
但是(shi)時間有(you)(you)(you)連續性(xing),空(kong)間有(you)(you)(you)延展性(xing);飛鳥(niao)之影在時空(kong)體內(nei)又是(shi)運動(dong)著的。這個命題對運動(dong)的性(xing)質(zhi)具有(you)(you)(you)片面的認(ren)識(shi),但是(shi)最(zui)終(zhong)是(shi)走上形(xing)而上學(xue),否認(ren)運動(dong)的可能(neng)性(xing)。
名家是(shi)春秋戰國社(she)會(hui)大(da)(da)變革的(de)(de)(de)(de)產物。他們(men)的(de)(de)(de)(de)辯論,"不法先王,不是(shi)禮義",①具有(you)反傳統的(de)(de)(de)(de)精神,是(shi)為新的(de)(de)(de)(de)政權(quan)服務的(de)(de)(de)(de)。但(dan)由于他們(men)認(ren)(ren)識(shi)的(de)(de)(de)(de)角度不同,因此觀點(dian)有(you)所不同。惠(hui)施、公孫龍都是(shi)片(pian)面(mian)(mian)夸大(da)(da)了認(ren)(ren)識(shi)的(de)(de)(de)(de)某(mou)一(yi)方面(mian)(mian),惠(hui)施強調事(shi)物的(de)(de)(de)(de)"同一(yi)"(即(ji)同)的(de)(de)(de)(de)一(yi)方面(mian)(mian),公孫龍則強調事(shi)物的(de)(de)(de)(de)差別(即(ji)"異")的(de)(de)(de)(de)一(yi)方面(mian)(mian)。他們(men)在(zai)各(ge)自所強調的(de)(de)(de)(de)方面(mian)(mian)都有(you)精辟的(de)(de)(de)(de)思(si)想,但(dan)是(shi)這些認(ren)(ren)識(shi)卻受到形而上學(xue)思(si)想方法的(de)(de)(de)(de)限制。他們(men)的(de)(de)(de)(de)錯誤是(shi)人類(lei)認(ren)(ren)識(shi)發(fa)展(zhan)史(shi)上不可避免的(de)(de)(de)(de),后期墨家的(de)(de)(de)(de)邏輯思(si)想正(zheng)是(shi)對他們(men)的(de)(de)(de)(de)批判總(zong)結。
但是(shi),名家在歷史上是(shi)有貢(gong)獻的(de),他們非常有似(si)于古希臘的(de)智(zhi)者(zhe)派,甚至于連某些命題(ti)都是(shi)相似(si)的(de)或者(zhe)相同(tong)的(de)(例如公元(yuan)前五(wu)世紀(ji)伊里(li)亞的(de)芝諾就有過"飛矢不動"的(de)命題(ti))。名辯(bian)學派和智(zhi)者(zhe)派大約(yue)前后同(tong)時各自在東方和西方以幾乎相同(tong)的(de)詭辯(bian)式的(de)理論活動,參(can)與(yu)了當(dang)時歷史性的(de)社會大變動,并促使人(ren)(ren)類思想認識大為深化。這是(shi)人(ren)(ren)類文明史最值(zhi)得引人(ren)(ren)注目的(de)現(xian)象之一。
公孫龍不像(xiang)惠施(shi)那樣強(qiang)調(diao)相(xiang)對的(de)(de)(de)、變(bian)化的(de)(de)(de),而(er)強(qiang)調(diao)“名”是絕對的(de)(de)(de)、不變(bian)的(de)(de)(de)。他由此得(de)到與柏拉圖(tu)的(de)(de)(de)理(li)念或共相(xiang)相(xiang)同的(de)(de)(de)概念,柏拉圖(tu)的(de)(de)(de)理(li)念或共相(xiang)在(zai)西方哲學(xue)是極著名的(de)(de)(de)。
他的(de)著(zhu)作《公孫(sun)龍子》,有(you)一(yi)(yi)篇《白(bai)馬(ma)論(lun)》。其主要(yao)命題是“白(bai)馬(ma)非(fei)(fei)馬(ma)”。公孫(sun)龍通過(guo)三(san)(san)點論(lun)證(zheng),力求(qiu)證(zheng)明這個命題。第一(yi)(yi)點是:“馬(ma)者(zhe)。所以(yi)命形(xing)也(ye);白(bai)者(zhe),所以(yi)命色(se)也(ye)。命色(se)者(zhe)非(fei)(fei)命形(xing)也(ye)。故曰(yue):白(bai)馬(ma)非(fei)(fei)馬(ma)。”若(ruo)用西方邏輯學術語(yu),大(da)家可以(yi)說,這一(yi)(yi)點是強調,“馬(ma)”、“白(bai)”、“白(bai)馬(ma)”的(de)內(nei)(nei)涵(han)(han)的(de)不同。“馬(ma)”的(de)內(nei)(nei)涵(han)(han)是一(yi)(yi)種動(dong)物,“白(bai)”的(de)內(nei)(nei)涵(han)(han)是一(yi)(yi)種顏(yan)色(se),“白(bai)馬(ma)”的(de)內(nei)(nei)涵(han)(han)是一(yi)(yi)種動(dong)物加一(yi)(yi)種顏(yan)色(se)。三(san)(san)者(zhe)內(nei)(nei)涵(han)(han)各不相同,所以(yi)白(bai)馬(ma)非(fei)(fei)馬(ma)。
第二點(dian)是(shi):“求(qiu)馬(ma)(ma)(ma)(ma)(ma)(ma),黃(huang)(huang)黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)皆(jie)可(ke)致。求(qiu)白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma),黃(huang)(huang)黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)不(bu)可(ke)致。……故黃(huang)(huang)黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)一也,而(er)可(ke)以(yi)(yi)應(ying)有(you)馬(ma)(ma)(ma)(ma)(ma)(ma),而(er)不(bu)可(ke)以(yi)(yi)應(ying)有(you)白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma),是(shi)白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)之(zhi)非馬(ma)(ma)(ma)(ma)(ma)(ma)審矣”。“馬(ma)(ma)(ma)(ma)(ma)(ma)者(zhe),無(wu)去(qu)取于色(se),故黃(huang)(huang)黑(hei)皆(jie)所(suo)以(yi)(yi)應(ying)。白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)者(zhe)有(you)去(qu)取于色(se),黃(huang)(huang)黑(hei)馬(ma)(ma)(ma)(ma)(ma)(ma)皆(jie)所(suo)以(yi)(yi)色(se)去(qu),故惟白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)獨可(ke)以(yi)(yi)應(ying)耳。無(wu)去(qu)者(zhe),非有(you)去(qu)也。故曰:白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)”。若用西(xi)方邏輯學術(shu)語,我(wo)們(men)可(ke)以(yi)(yi)說,這一點(dian)是(shi)強調,“馬(ma)(ma)(ma)(ma)(ma)(ma)”、“白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)”的(de)(de)外(wai)(wai)延的(de)(de)不(bu)同(tong)。“馬(ma)(ma)(ma)(ma)(ma)(ma)”的(de)(de)外(wai)(wai)延包括一切馬(ma)(ma)(ma)(ma)(ma)(ma),不(bu)管其顏色(se)的(de)(de)區(qu)別(bie)。“白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)”的(de)(de)外(wai)(wai)延只(zhi)包括白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma),有(you)相(xiang)應(ying)的(de)(de)顏色(se)區(qu)別(bie)。由(you)于“馬(ma)(ma)(ma)(ma)(ma)(ma)”與“白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)”外(wai)(wai)延不(bu)同(tong),所(suo)以(yi)(yi)白(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)非馬(ma)(ma)(ma)(ma)(ma)(ma)。
第三點是:“馬(ma)(ma)(ma)(ma)(ma)(ma)固有(you)色(se),故有(you)白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)。使馬(ma)(ma)(ma)(ma)(ma)(ma)無色(se),有(you)馬(ma)(ma)(ma)(ma)(ma)(ma)如己耳。安(an)取白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)?故白(bai)(bai)(bai)(bai)(bai)者(zhe),非(fei)馬(ma)(ma)(ma)(ma)(ma)(ma)也。白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)者(zhe),馬(ma)(ma)(ma)(ma)(ma)(ma)與(yu)白(bai)(bai)(bai)(bai)(bai)也,白(bai)(bai)(bai)(bai)(bai)與(yu)馬(ma)(ma)(ma)(ma)(ma)(ma)也。故曰(yue):白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)非(fei)馬(ma)(ma)(ma)(ma)(ma)(ma)也。”這(zhe)一點似乎是強調,“馬(ma)(ma)(ma)(ma)(ma)(ma)”這(zhe)個(ge)(ge)共性(xing)與(yu)“白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)”這(zhe)個(ge)(ge)共性(xing)的(de)(de)不(bu)(bu)同。馬(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)共性(xing),是一切(qie)馬(ma)(ma)(ma)(ma)(ma)(ma)的(de)(de)本質屬性(xing)。它不(bu)(bu)包涵顏色(se),僅只是“馬(ma)(ma)(ma)(ma)(ma)(ma)作為馬(ma)(ma)(ma)(ma)(ma)(ma)”。這(zhe)樣的(de)(de)“馬(ma)(ma)(ma)(ma)(ma)(ma)”的(de)(de)共性(xing)與(yu)“白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)”的(de)(de)共性(xing)不(bu)(bu)同。也就是說,馬(ma)(ma)(ma)(ma)(ma)(ma)作為馬(ma)(ma)(ma)(ma)(ma)(ma)與(yu)白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)作為白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)不(bu)(bu)同。所以(yi)白(bai)(bai)(bai)(bai)(bai)馬(ma)(ma)(ma)(ma)(ma)(ma)非(fei)馬(ma)(ma)(ma)(ma)(ma)(ma)。
或“堅(jian)(jian)(jian)(jian)(jian)(jian)石(shi)(shi)(shi)(shi)”,除了馬作為(wei)(wei)馬,又還有(you)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)作為(wei)(wei)白(bai)(bai)(bai)(bai)(bai)(bai)(bai),即(ji)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)的(de)(de)(de)共相。《白(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬論(lun)(lun)》中說(shuo):“白(bai)(bai)(bai)(bai)(bai)(bai)(bai)者(zhe)不(bu)定(ding)(ding)(ding)所白(bai)(bai)(bai)(bai)(bai)(bai)(bai),忘之而(er)可(ke)(ke)也(ye)(ye)。白(bai)(bai)(bai)(bai)(bai)(bai)(bai)馬者(zhe)言白(bai)(bai)(bai)(bai)(bai)(bai)(bai)。定(ding)(ding)(ding)所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)也(ye)(ye)。定(ding)(ding)(ding)所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)者(zhe),非(fei)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)也(ye)(ye)。”定(ding)(ding)(ding)所白(bai)(bai)(bai)(bai)(bai)(bai)(bai),就是(shi)具體(ti)(ti)(ti)的(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)(se),見(jian)于(yu)各種(zhong)實際(ji)的(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)(se)物體(ti)(ti)(ti)。見(jian)于(yu)各種(zhong)實際(ji)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)(se)物體(ti)(ti)(ti)的(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)(se),是(shi)這(zhe)(zhe)些(xie)物體(ti)(ti)(ti)所定(ding)(ding)(ding)的(de)(de)(de)。但是(shi)“白(bai)(bai)(bai)(bai)(bai)(bai)(bai)”的(de)(de)(de)共相,則(ze)不(bu)是(shi)任(ren)何實際(ji)的(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)色(se)(se)物體(ti)(ti)(ti)所定(ding)(ding)(ding)。它是(shi)未定(ding)(ding)(ding)的(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)的(de)(de)(de)共性(xing)。《公孫(sun)(sun)龍子》另有(you)一篇《堅(jian)(jian)(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)論(lun)(lun)》。其主(zhu)要命題是(shi)“離堅(jian)(jian)(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)”。公孫(sun)(sun)龍的(de)(de)(de)證明(ming)有(you)兩個部分。第一部分是(shi),假設有(you)堅(jian)(jian)(jian)(jian)(jian)(jian)而(er)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)的(de)(de)(de)石(shi)(shi)(shi)(shi),他設問說(shuo):“堅(jian)(jian)(jian)(jian)(jian)(jian)、白(bai)(bai)(bai)(bai)(bai)(bai)(bai)、石(shi)(shi)(shi)(shi):三,可(ke)(ke)乎(hu)?曰(yue):不(bu)可(ke)(ke)。曰(yue):二(er)(er)(er),可(ke)(ke)乎(hu)?曰(yue):可(ke)(ke)。曰(yue):何哉?曰(yue):無(wu)堅(jian)(jian)(jian)(jian)(jian)(jian)得(de)(de)(de)(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai),其舉(ju)也(ye)(ye)二(er)(er)(er);無(wu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)得(de)(de)(de)(de)(de)(de)堅(jian)(jian)(jian)(jian)(jian)(jian),其舉(ju)也(ye)(ye)二(er)(er)(er)”。“視不(bu)得(de)(de)(de)(de)(de)(de)其所堅(jian)(jian)(jian)(jian)(jian)(jian)而(er)得(de)(de)(de)(de)(de)(de)其所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)者(zhe),無(wu)堅(jian)(jian)(jian)(jian)(jian)(jian)也(ye)(ye)。拊不(bu)得(de)(de)(de)(de)(de)(de)其所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)而(er)得(de)(de)(de)(de)(de)(de)其所堅(jian)(jian)(jian)(jian)(jian)(jian),得(de)(de)(de)(de)(de)(de)其堅(jian)(jian)(jian)(jian)(jian)(jian)也(ye)(ye),無(wu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)也(ye)(ye)。”這(zhe)(zhe)段(duan)對話是(shi)從知識論(lun)(lun)方(fang)面(mian)證明(ming)堅(jian)(jian)(jian)(jian)(jian)(jian)、白(bai)(bai)(bai)(bai)(bai)(bai)(bai)是(shi)彼此分離的(de)(de)(de)。有(you)一堅(jian)(jian)(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)石(shi)(shi)(shi)(shi),用(yong)眼看,則(ze)只(zhi)“得(de)(de)(de)(de)(de)(de)其所白(bai)(bai)(bai)(bai)(bai)(bai)(bai)”,只(zhi)得(de)(de)(de)(de)(de)(de)一白(bai)(bai)(bai)(bai)(bai)(bai)(bai)石(shi)(shi)(shi)(shi);用(yong)手摸,則(ze)只(zhi)“得(de)(de)(de)(de)(de)(de)其所堅(jian)(jian)(jian)(jian)(jian)(jian)”,只(zhi)得(de)(de)(de)(de)(de)(de)一堅(jian)(jian)(jian)(jian)(jian)(jian)石(shi)(shi)(shi)(shi)。感(gan)覺(jue)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)時不(bu)能(neng)感(gan)覺(jue)堅(jian)(jian)(jian)(jian)(jian)(jian),感(gan)覺(jue)堅(jian)(jian)(jian)(jian)(jian)(jian)時不(bu)能(neng)感(gan)覺(jue)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)。所以,從知識論(lun)(lun)方(fang)面(mian)說(shuo),只(zhi)有(you)“白(bai)(bai)(bai)(bai)(bai)(bai)(bai)石(shi)(shi)(shi)(shi)”沒有(you)“堅(jian)(jian)(jian)(jian)(jian)(jian)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)石(shi)(shi)(shi)(shi)”。這(zhe)(zhe)就是(shi)“無(wu)堅(jian)(jian)(jian)(jian)(jian)(jian)得(de)(de)(de)(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)(bai)(bai),其舉(ju)也(ye)(ye)二(er)(er)(er);無(wu)白(bai)(bai)(bai)(bai)(bai)(bai)(bai)得(de)(de)(de)(de)(de)(de)堅(jian)(jian)(jian)(jian)(jian)(jian),其舉(ju)也(ye)(ye)二(er)(er)(er)”的(de)(de)(de)意(yi)思。
他(ta)(ta)的(de)(de)(de)(de)關于(yu)(yu)名與(yu)(yu)實的(de)(de)(de)(de)關系的(de)(de)(de)(de)理論是(shi)(shi)(shi)(shi)(shi)建立(li)在(zai)(zai)他(ta)(ta)的(de)(de)(de)(de)關于(yu)(yu)共相(xiang)的(de)(de)(de)(de)唯心(xin)主(zhu)義哲學理論之(zhi)上的(de)(de)(de)(de)。他(ta)(ta)認為,共相(xiang)是(shi)(shi)(shi)(shi)(shi)一(yi)(yi)(yi)種獨立(li)存(cun)在(zai)(zai)。他(ta)(ta)的(de)(de)(de)(de)“堅(jian)白(bai)(bai)(bai)論”就(jiu)是(shi)(shi)(shi)(shi)(shi)企(qi)(qi)圖(tu)論證一(yi)(yi)(yi)塊白(bai)(bai)(bai)石頭的(de)(de)(de)(de)白(bai)(bai)(bai)色和(he)堅(jian)硬(ying)性(xing)是(shi)(shi)(shi)(shi)(shi)可(ke)以(yi)獨立(li)存(cun)在(zai)(zai)的(de)(de)(de)(de)。他(ta)(ta)首(shou)先從(cong)關于(yu)(yu)“堅(jian)白(bai)(bai)(bai)石”的(de)(de)(de)(de)感(gan)(gan)覺(jue)(jue)(jue)來進(jin)行分(fen)(fen)析,企(qi)(qi)圖(tu)說(shuo)(shuo)明(ming),“堅(jian)”與(yu)(yu)“白(bai)(bai)(bai)”可(ke)以(yi)互相(xiang)分(fen)(fen)離(li),然后再(zai)說(shuo)(shuo)明(ming)它們可(ke)以(yi)離(li)開人(ren)們的(de)(de)(de)(de)意(yi)識而(er)(er)存(cun)在(zai)(zai)。他(ta)(ta)說(shuo)(shuo):“視不(bu)(bu)得(de)其所堅(jian)而(er)(er)得(de)其所白(bai)(bai)(bai)者(zhe)(zhe),無(wu)(wu)堅(jian)也。,拊不(bu)(bu)得(de)其所白(bai)(bai)(bai)而(er)(er)得(de)其所堅(jian)者(zhe)(zhe),無(wu)(wu)白(bai)(bai)(bai)也。”(《堅(jian)白(bai)(bai)(bai)論》)又(you)說(shuo)(shuo):“得(de)其白(bai)(bai)(bai).得(de)其堅(jian),見(jian)(jian)(jian)(jian)(jian)與(yu)(yu)不(bu)(bu)見(jian)(jian)(jian)(jian)(jian)離(li):不(bu)(bu)見(jian)(jian)(jian)(jian)(jian)離(li)。一(yi)(yi)(yi)一(yi)(yi)(yi)不(bu)(bu)相(xiang)盈(ying)故離(li),離(li)也者(zhe)(zhe)藏(zang)(zang)(zang)也。”(同(tong)上)這是(shi)(shi)(shi)(shi)(shi)說(shuo)(shuo),看(kan)的(de)(de)(de)(de)時(shi)候(hou)感(gan)(gan)覺(jue)(jue)(jue)不(bu)(bu)到(dao)(dao)堅(jian)硬(ying)性(xing),而(er)(er)只(zhi)感(gan)(gan)覺(jue)(jue)(jue)到(dao)(dao)白(bai)(bai)(bai)色,這時(shi)候(hou)堅(jian)硬(ying)性(xing)等于(yu)(yu)沒(mei)有。觸的(de)(de)(de)(de)時(shi)候(hou)感(gan)(gan)覺(jue)(jue)(jue)不(bu)(bu)到(dao)(dao)白(bai)(bai)(bai)色,而(er)(er)只(zhi)感(gan)(gan)覺(jue)(jue)(jue)到(dao)(dao)堅(jian)硬(ying)性(xing),這時(shi)候(hou)白(bai)(bai)(bai)色等于(yu)(yu)沒(mei)有。或(huo)者(zhe)(zhe)感(gan)(gan)覺(jue)(jue)(jue)到(dao)(dao)白(bai)(bai)(bai)色,或(huo)者(zhe)(zhe)感(gan)(gan)覺(jue)(jue)(jue)到(dao)(dao)堅(jian)硬(ying)性(xing)。感(gan)(gan)覺(jue)(jue)(jue)到(dao)(dao)的(de)(de)(de)(de)與(yu)(yu)感(gan)(gan)覺(jue)(jue)(jue)不(bu)(bu)到(dao)(dao)的(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)彼此分(fen)(fen)離(li)的(de)(de)(de)(de)。彼此不(bu)(bu)聯在(zai)(zai)一(yi)(yi)(yi)起,所以(yi)說(shuo)(shuo)是(shi)(shi)(shi)(shi)(shi)分(fen)(fen)離(li)。而(er)(er)分(fen)(fen)離(li)就(jiu)是(shi)(shi)(shi)(shi)(shi)藏(zang)(zang)(zang)在(zai)(zai)自(zi)身之(zhi)中。(公(gong)孫(sun)龍自(zi)己(ji)解釋說(shuo)(shuo)“藏(zang)(zang)(zang)”是(shi)(shi)(shi)(shi)(shi)指“自(zi)藏(zang)(zang)(zang)”有相(xiang)當(dang)于(yu)(yu)“潛存(cun)”之(zhi)意(yi))公(gong)孫(sun)龍的(de)(de)(de)(de)這兩段話是(shi)(shi)(shi)(shi)(shi)說(shuo)(shuo)堅(jian)白(bai)(bai)(bai)石的(de)(de)(de)(de)白(bai)(bai)(bai)色和(he)堅(jian)硬(ying)性(xing)是(shi)(shi)(shi)(shi)(shi)可(ke)以(yi)彼此分(fen)(fen)離(li)而(er)(er)存(cun)在(zai)(zai)的(de)(de)(de)(de)。他(ta)(ta)又(you)說(shuo)(shuo):“且猶白(bai)(bai)(bai),以(yi)目,以(yi)火(huo)見(jian)(jian)(jian)(jian)(jian),而(er)(er)火(huo)不(bu)(bu)見(jian)(jian)(jian)(jian)(jian);則火(huo)與(yu)(yu)目不(bu)(bu)見(jian)(jian)(jian)(jian)(jian)而(er)(er)神見(jian)(jian)(jian)(jian)(jian)。神不(bu)(bu)見(jian)(jian)(jian)(jian)(jian),而(er)(er)見(jian)(jian)(jian)(jian)(jian)離(li)。”(同(tong)上)這里(li)所說(shuo)(shuo)的(de)(de)(de)(de)“神”即精(jing)神作(zuo)用,也就(jiu)是(shi)(shi)(shi)(shi)(shi)指意(yi)識;“火(huo)”就(jiu)是(shi)(shi)(shi)(shi)(shi)光(guang)(guang)。這是(shi)(shi)(shi)(shi)(shi)說(shuo)(shuo),例如白(bai)(bai)(bai)色是(shi)(shi)(shi)(shi)(shi)靠(kao)著眼(yan)睛和(he)光(guang)(guang)看(kan)見(jian)(jian)(jian)(jian)(jian)的(de)(de)(de)(de)。但光(guang)(guang)本(ben)身沒(mei)有見(jian)(jian)(jian)(jian)(jian)物(wu)的(de)(de)(de)(de)作(zuo)用,那么光(guang)(guang)和(he)眼(yan)睛合在(zai)(zai)一(yi)(yi)(yi)起也不(bu)(bu)能(neng)(neng)看(kan)見(jian)(jian)(jian)(jian)(jian),只(zhi)能(neng)(neng)是(shi)(shi)(shi)(shi)(shi)意(yi)識在(zai)(zai)看(kan)見(jian)(jian)(jian)(jian)(jian),而(er)(er)意(yi)識本(ben)身也是(shi)(shi)(shi)(shi)(shi)沒(mei)有見(jian)(jian)(jian)(jian)(jian)物(wu)作(zuo)用的(de)(de)(de)(de)。所以(yi)白(bai)(bai)(bai)色是(shi)(shi)(shi)(shi)(shi)和(he)視覺(jue)(jue)(jue)分(fen)(fen)離(li)著的(de)(de)(de)(de)。公(gong)孫(sun)龍在(zai)(zai)這里(li)是(shi)(shi)(shi)(shi)(shi)在(zai)(zai)說(shuo)(shuo)明(ming)白(bai)(bai)(bai)色等共相(xiang)是(shi)(shi)(shi)(shi)(shi)可(ke)以(yi)離(li)開人(ren)類(lei)的(de)(de)(de)(de)感(gan)(gan)覺(jue)(jue)(jue)而(er)(er)獨立(li)存(cun)在(zai)(zai)的(de)(de)(de)(de)。(公(gong)孫(sun)龍在(zai)(zai)這里(li)犯了(le)一(yi)(yi)(yi)些邏輯錯誤。因為由眼(yan)睛離(li)開了(le)光(guang)(guang)不(bu)(bu)能(neng)(neng)見(jian)(jian)(jian)(jian)(jian)物(wu)和(he)光(guang)(guang)本(ben)身沒(mei)有見(jian)(jian)(jian)(jian)(jian)物(wu)作(zuo)用這樣的(de)(de)(de)(de)前提,不(bu)(bu)能(neng)(neng)推出(chu)(chu),眼(yan)睛和(he)光(guang)(guang)合在(zai)(zai)一(yi)(yi)(yi)起也不(bu)(bu)能(neng)(neng)看(kan)見(jian)(jian)(jian)(jian)(jian)。)由這一(yi)(yi)(yi)些話可(ke)以(yi)清楚地看(kan)出(chu)(chu)來,公(gong)孫(sun)龍主(zhu)張像(xiang)“白(bai)(bai)(bai)色”這一(yi)(yi)(yi)類(lei)共相(xiang)是(shi)(shi)(shi)(shi)(shi)客(ke)觀(guan)存(cun)在(zai)(zai)的(de)(de)(de)(de),因之(zhi)他(ta)(ta)是(shi)(shi)(shi)(shi)(shi)客(ke)觀(guan)唯心(xin)主(zhu)義者(zhe)(zhe)。
公(gong)孫(sun)龍(long)觀(guan)察(cha)事物,雖然把(ba)個別(bie)與(yu)一(yi)般用"離"的觀(guan)點(dian)絕對化,只見(jian)離而(er)不見(jian)合(he),不符合(he)辯證法的“個別(bie)存(cun)在于一(yi)般之中”的觀(guan)點(dian),但他能夠(gou)開辟(pi)邏(luo)(luo)(luo)輯(ji)領域,建立邏(luo)(luo)(luo)輯(ji)學(xue)(xue)的理論體系,有助(zhu)于百家爭鳴的發展。中國(guo)歷史上多數(shu)學(xue)(xue)派看重(zhong)研究政治(zhi)倫(lun)(lun)理,多不懂邏(luo)(luo)(luo)輯(ji)學(xue)(xue),甚至不承認這門(men)學(xue)(xue)問,往往以政治(zhi)倫(lun)(lun)理觀(guan)念(nian)來批評公(gong)孫(sun)龍(long)的邏(luo)(luo)(luo)輯(ji)思(si)想,直到近世人(ren)們才公(gong)開承認公(gong)孫(sun)龍(long)辯學(xue)(xue)對象邏(luo)(luo)(luo)輯(ji)的問題(ti),并加以重(zhong)視。
公孫龍“白馬非馬”的論說(shuo)(shuo)雖然有其一定的合理(li)性(xing)和開創(chuang)性(xing),也(ye)符合辯證法講的個(ge)別與(yu)一般相(xiang)區別的原理(li),更(geng)有糾(jiu)正當時名(ming)實混亂(luan)的作(zuo)用(yong)。但是(shi),他沿著同樣的原理(li)隨后再提(ti)出的“雞三足”、“火(huo)不熱(re)”等辯說(shuo)(shuo)確(que)有走火(huo)入(ru)魔之嫌,已(yi)墜(zhui)入(ru)“詭辯”的深淵中。怪不得荀子要(yao)斥他為“此惑于(yu)用(yong)名(ming)以亂(luan)實也(ye)。”鄒衍要(yao)批評他是(shi)“害(hai)大道”、“不能無害(hai)君子”。
諸子各家普遍認為公孫龍(long)為詭辯,又似(si)乎(hu)無法在辯論中勝出。
《公(gong)孫龍子(zi)》第一章《跡府》記載了孔(kong)子(zi)的(de)后(hou)代孔(kong)穿企圖駁倒(dao)公(gong)孫龍但失敗的(de)故事。
《莊(zhuang)子(zi)天下篇》稱公孫(sun)龍(long)“飾人之心(xin),易人之意,能勝人之口,不(bu)能服人之心(xin)”。
《荀子(zi) 不(bu)茍篇》中認為君子(zi)不(bu)看重惠施等名家的辯才(cai),因為其不(bu)符合禮。君子(zi)并(bing)不(bu)是(shi)無(wu)法反(fan)駁堅白離的觀點,而是(shi)不(bu)與之(zhi)辯論。
《荀子 正名篇(pian)》認為白(bai)馬非馬論是“此惑于用名以亂實者也”。
《資(zi)治通鑒》中記載(zai)鄒衍認為公孫龍是“煩文以(yi)(yi)相(xiang)(xiang)假,飾(shi)辭以(yi)(yi)相(xiang)(xiang)敦,巧譬以(yi)(yi)相(xiang)(xiang)移,引人(ren)使(shi)不得及其意,如此害大道”,于是不和公孫龍辯論。
周昌忠《公(gong)孫龍(long)子新論》把(ba)公(gong)孫龍(long)的思想和西方哲學(xue)相比較,認為(wei)公(gong)孫龍(long)“構造(zao)了一個相當豐富的關于語言(yan)本身(shen)的哲學(xue)理(li)論”,并不比亞里士多德遜色。
張(zhang)遠山在著(zhu)作《寓言的(de)密碼》中(zhong)(zhong)認為,公孫(sun)龍開(kai)創(chuang)了(le)中(zhong)(zhong)國的(de)理(li)(li)性(xing)學派的(de)先河。但諸子百家(jia)都未能理(li)(li)解他(ta)的(de)觀點。