¡¶a history of science-1¡·

ÏÂÔØ±¾Êé

Ìí¼ÓÊéÇ©

a history of science-1- µÚ14²¿·Ö


°´¼üÅÌÉÏ·½Ïò¼ü ¡û »ò ¡ú ¿É¿ìËÙÉÏÏ·­Ò³£¬°´¼üÅÌÉ쵀 Enter ¼ü¿É»Øµ½±¾ÊéĿ¼ҳ£¬°´¼üÅÌÉÏ·½Ïò¼ü ¡ü ¿É»Øµ½±¾Ò³¶¥²¿£¡
onarchies¡££§25£§¡¡Of¡¡Babylonia¡¡he¡¡says£º¡¡¡¨Hers¡¡was¡¡apparently¡¡the¡¡genius¡¡which¡¡excogitated¡¡an¡¡alphabet£»¡¡worked¡¡out¡¡the¡¡simpler¡¡problems¡¡of¡¡arithmetic£»¡¡invented¡¡implements¡¡for¡¡measuring¡¡the¡¡lapse¡¡of¡¡time£»¡¡conceived¡¡the¡¡idea¡¡of¡¡raising¡¡enormous¡¡structures¡¡with¡¡the¡¡poorest¡¡of¡¡all¡¡materials£»¡¡clay£»¡¡discovered¡¡the¡¡art¡¡of¡¡polishing£»¡¡boring£»¡¡and¡¡engraving¡¡gems£»¡¡reproduced¡¡with¡¡truthfulness¡¡the¡¡outlines¡¡of¡¡human¡¡and¡¡animal¡¡forms£»¡¡attained¡¡to¡¡high¡¡perfection¡¡in¡¡textile¡¡fabrics£»¡¡studied¡¡with¡¡success¡¡the¡¡motions¡¡of¡¡the¡¡heavenly¡¡bodies£»¡¡conceived¡¡of¡¡grammar¡¡as¡¡a¡¡science£»¡¡elaborated¡¡a¡¡system¡¡of¡¡law£»¡¡saw¡¡the¡¡value¡¡of¡¡an¡¡exact¡¡chronologyin¡¡almost¡¡every¡¡branch¡¡of¡¡science¡¡made¡¡a¡¡beginning£»¡¡thus¡¡rendering¡¡it¡¡comparatively¡¡easy¡¡for¡¡other¡¡nations¡¡to¡¡proceed¡¡with¡¡the¡¡superstructure¡£¡£¡£¡£¡¡It¡¡was¡¡from¡¡the¡¡East£»¡¡not¡¡from¡¡Egypt£»¡¡that¡¡Greece¡¡derived¡¡her¡¡architecture£»¡¡her¡¡sculpture£»¡¡her¡¡science£»¡¡her¡¡philosophy£»¡¡her¡¡mathematical¡¡knowledgein¡¡a¡¡word£»¡¡her¡¡intellectual¡¡life¡£¡¡And¡¡Babylon¡¡was¡¡the¡¡source¡¡to¡¡which¡¡the¡¡entire¡¡stream¡¡of¡¡Eastern¡¡civilization¡¡may¡¡be¡¡traced¡£¡¡It¡¡is¡¡scarcely¡¡too¡¡much¡¡to¡¡say¡¡that£»¡¡but¡¡for¡¡Babylon£»¡¡real¡¡civilization¡¡might¡¡not¡¡yet¡¡have¡¡dawned¡¡upon¡¡the¡¡earth¡£¡¨

Considering¡¡that¡¡a¡¡period¡¡of¡¡almost¡¡two¡¡thousand¡¡years¡¡separates¡¡the¡¡times¡¡of¡¡writing¡¡of¡¡these¡¡two¡¡estimates£»¡¡the¡¡estimates¡¡themselves¡¡are¡¡singularly¡¡in¡¡unison¡£¡¡They¡¡show¡¡that¡¡the¡¡greatest¡¡of¡¡Oriental¡¡nations¡¡has¡¡not¡¡suffered¡¡in¡¡reputation¡¡at¡¡the¡¡hands¡¡of¡¡posterity¡£¡¡It¡¡is¡¡indeed¡¡almost¡¡impossible¡¡to¡¡contemplate¡¡the¡¡monuments¡¡of¡¡Babylonian¡¡and¡¡Assyrian¡¡civilization¡¡that¡¡are¡¡now¡¡preserved¡¡in¡¡the¡¡European¡¡and¡¡American¡¡museums¡¡without¡¡becoming¡¡enthusiastic¡£¡¡That¡¡certainly¡¡was¡¡a¡¡wonderful¡¡civilization¡¡which¡¡has¡¡left¡¡us¡¡the¡¡tablets¡¡on¡¡which¡¡are¡¡inscribed¡¡the¡¡laws¡¡of¡¡a¡¡Khamurabi¡¡on¡¡the¡¡one¡¡hand£»¡¡and¡¡the¡¡art¡¡treasures¡¡of¡¡the¡¡palace¡¡of¡¡an¡¡Asshurbanipal¡¡on¡¡the¡¡other¡£¡¡Yet¡¡a¡¡candid¡¡consideration¡¡of¡¡the¡¡scientific¡¡attainments¡¡of¡¡the¡¡Babylonians¡¡and¡¡Assyrians¡¡can¡¡scarcely¡¡arouse¡¡us¡¡to¡¡a¡¡like¡¡enthusiasm¡£¡¡In¡¡considering¡¡the¡¡subject¡¡we¡¡have¡¡seen¡¡that£»¡¡so¡¡far¡¡as¡¡pure¡¡science¡¡is¡¡concerned£»¡¡the¡¡efforts¡¡of¡¡the¡¡Babylonians¡¡and¡¡Assyrians¡¡chiefly¡¡centred¡¡about¡¡the¡¡subjects¡¡of¡¡astrology¡¡and¡¡magic¡£¡¡With¡¡the¡¡records¡¡of¡¡their¡¡ghost¡­haunted¡¡science¡¡fresh¡¡in¡¡mind£»¡¡one¡¡might¡¡be¡¡forgiven¡¡for¡¡a¡¡momentary¡¡desire¡¡to¡¡take¡¡issue¡¡with¡¡Canon¡¡Rawlinson's¡¡words¡£¡¡We¡¡are¡¡assured¡¡that¡¡the¡¡scientific¡¡attainments¡¡of¡¡Europe¡¡are¡¡almost¡¡solely¡¡to¡¡be¡¡credited¡¡to¡¡Babylonia¡¡and¡¡not¡¡to¡¡Egypt£»¡¡but¡¡we¡¡should¡¡not¡¡forget¡¡that¡¡Plato£»¡¡the¡¡greatest¡¡of¡¡the¡¡Greek¡¡thinkers£»¡¡went¡¡to¡¡Egypt¡¡and¡¡not¡¡to¡¡Babylonia¡¡to¡¡pursue¡¡his¡¡studies¡¡when¡¡he¡¡wished¡¡to¡¡penetrate¡¡the¡¡secrets¡¡of¡¡Oriental¡¡science¡¡and¡¡philosophy¡£¡¡Clearly£»¡¡then£»¡¡classical¡¡Greece¡¡did¡¡not¡¡consider¡¡Babylonia¡¡as¡¡having¡¡a¡¡monopoly¡¡of¡¡scientific¡¡knowledge£»¡¡and¡¡we¡¡of¡¡to¡­day£»¡¡when¡¡we¡¡attempt¡¡to¡¡weigh¡¡the¡¡new¡¡evidence¡¡that¡¡has¡¡come¡¡to¡¡us¡¡in¡¡recent¡¡generations¡¡with¡¡the¡¡Babylonian¡¡records¡¡themselves£»¡¡find¡¡that¡¡some£»¡¡at¡¡least£»¡¡of¡¡the¡¡heritages¡¡for¡¡which¡¡Babylonia¡¡has¡¡been¡¡praised¡¡are¡¡of¡¡more¡¡than¡¡doubtful¡¡value¡£¡¡Babylonia£»¡¡for¡¡example£»¡¡gave¡¡us¡¡our¡¡seven¡­day¡¡week¡¡and¡¡our¡¡system¡¡of¡¡computing¡¡by¡¡twelves¡£¡¡But¡¡surely¡¡the¡¡world¡¡could¡¡have¡¡got¡¡on¡¡as¡¡well¡¡without¡¡that¡¡magic¡¡number¡¡seven£»¡¡and¡¡after¡¡some¡¡hundreds¡¡of¡¡generations¡¡we¡¡are¡¡coming¡¡to¡¡feel¡¡that¡¡the¡¡decimal¡¡system¡¡of¡¡the¡¡Egyptians¡¡has¡¡advantages¡¡over¡¡the¡¡duodecimal¡¡system¡¡of¡¡the¡¡Babylonians¡£¡¡Again£»¡¡the¡¡Babylonians¡¡did¡¡not¡¡invent¡¡the¡¡alphabet£»¡¡they¡¡did¡¡not¡¡even¡¡accept¡¡it¡¡when¡¡all¡¡the¡¡rest¡¡of¡¡the¡¡world¡¡had¡¡recognized¡¡its¡¡value¡£¡¡In¡¡grammar¡¡and¡¡arithmetic£»¡¡as¡¡with¡¡astronomy£»¡¡they¡¡seemed¡¡not¡¡to¡¡have¡¡advanced¡¡greatly£»¡¡if¡¡at¡¡all£»¡¡upon¡¡the¡¡Egyptians¡£¡¡One¡¡field¡¡in¡¡which¡¡they¡¡stand¡¡out¡¡in¡¡startling¡¡pre¡­¡¡eminence¡¡is¡¡the¡¡field¡¡of¡¡astrology£»¡¡but¡¡this£»¡¡in¡¡the¡¡estimate¡¡of¡¡modern¡¡thought£»¡¡is¡¡the¡¡very¡¡negation¡¡of¡¡science¡£¡¡Babylonia¡¡impressed¡¡her¡¡superstitions¡¡on¡¡the¡¡Western¡¡world£»¡¡and¡¡when¡¡we¡¡consider¡¡the¡¡baleful¡¡influence¡¡of¡¡these¡¡superstitions£»¡¡we¡¡may¡¡almost¡¡question¡¡whether¡¡we¡¡might¡¡not¡¡reverse¡¡Canon¡¡Rawlinson's¡¡estimate¡¡and¡¡say¡¡that¡¡perhaps¡¡but¡¡for¡¡Babylonia¡¡real¡¡civilization£»¡¡based¡¡on¡¡the¡¡application¡¡of¡¡true¡¡science£»¡¡might¡¡have¡¡dawned¡¡upon¡¡the¡¡earth¡¡a¡¡score¡¡of¡¡centuries¡¡before¡¡it¡¡did¡£¡¡Yet£»¡¡after¡¡all£»¡¡perhaps¡¡this¡¡estimate¡¡is¡¡unjust¡£¡¡Society£»¡¡like¡¡an¡¡individual¡¡organism£»¡¡must¡¡creep¡¡before¡¡it¡¡can¡¡walk£»¡¡and¡¡perhaps¡¡the¡¡Babylonian¡¡experiments¡¡in¡¡astrology¡¡and¡¡magic£»¡¡which¡¡European¡¡civilization¡¡was¡¡destined¡¡to¡¡copy¡¡for¡¡some¡¡three¡¡or¡¡four¡¡thousand¡¡years£»¡¡must¡¡have¡¡been¡¡made¡¡a¡¡part¡¡of¡¡the¡¡necessary¡¡evolution¡¡of¡¡our¡¡race¡¡in¡¡one¡¡place¡¡or¡¡in¡¡another¡£¡¡That¡¡thought£»¡¡however£»¡¡need¡¡not¡¡blind¡¡us¡¡to¡¡the¡¡essential¡¡fact£»¡¡which¡¡the¡¡historian¡¡of¡¡science¡¡must¡¡needs¡¡admit£»¡¡that¡¡for¡¡the¡¡Babylonian£»¡¡despite¡¡his¡¡boasted¡¡culture£»¡¡science¡¡spelled¡¡superstition¡£

IV¡£¡¡THE¡¡DEVELOPMENT¡¡OF¡¡THE¡¡ALPHABET¡¡Before¡¡we¡¡turn¡¡specifically¡¡to¡¡the¡¡new¡¡world¡¡of¡¡the¡¡west£»¡¡it¡¡remains¡¡to¡¡take¡¡note¡¡of¡¡what¡¡may¡¡perhaps¡¡be¡¡regarded¡¡as¡¡the¡¡very¡¡greatest¡¡achievement¡¡of¡¡ancient¡¡science¡£¡¡This¡¡was¡¡the¡¡analysis¡¡of¡¡speech¡¡sounds£»¡¡and¡¡the¡¡resulting¡¡development¡¡of¡¡a¡¡system¡¡of¡¡alphabetical¡¡writing¡£¡¡To¡¡comprehend¡¡the¡¡series¡¡of¡¡scientific¡¡inductions¡¡which¡¡led¡¡to¡¡this¡¡result£»¡¡we¡¡must¡¡go¡¡back¡¡in¡¡imagination¡¡and¡¡trace¡¡briefly¡¡the¡¡development¡¡of¡¡the¡¡methods¡¡of¡¡recording¡¡thought¡¡by¡¡means¡¡of¡¡graphic¡¡symbols¡£¡¡In¡¡other¡¡words£»¡¡we¡¡must¡¡trace¡¡the¡¡evolution¡¡of¡¡the¡¡art¡¡of¡¡writing¡£¡¡In¡¡doing¡¡so¡¡we¡¡cannot¡¡hold¡¡to¡¡national¡¡lines¡¡as¡¡we¡¡have¡¡done¡¡in¡¡the¡¡preceding¡¡two¡¡chapters£»¡¡though¡¡the¡¡efforts¡¡of¡¡the¡¡two¡¡great¡¡scientific¡¡nations¡¡just¡¡considered¡¡will¡¡enter¡¡prominently¡¡into¡¡the¡¡story¡£¡¡The¡¡familiar¡¡Greek¡¡legend¡¡assures¡¡us¡¡that¡¡a¡¡Phoenician¡¡named¡¡Kadmus¡¡was¡¡the¡¡first¡¡to¡¡bring¡¡a¡¡knowledge¡¡of¡¡letters¡¡into¡¡Europe¡£¡¡An¡¡elaboration¡¡of¡¡the¡¡story£»¡¡current¡¡throughout¡¡classical¡¡times£»¡¡offered¡¡the¡¡further¡¡explanation¡¡that¡¡the¡¡Phoenicians¡¡had¡¡in¡¡turn¡¡acquired¡¡the¡¡art¡¡of¡¡writing¡¡from¡¡the¡¡Egyptians¡¡or¡¡Babylonians¡£¡¡Knowledge¡¡as¡¡to¡¡the¡¡true¡¡origin¡¡and¡¡development¡¡of¡¡the¡¡art¡¡of¡¡writing¡¡did¡¡not¡¡extend¡¡in¡¡antiquity¡¡beyond¡¡such¡¡vagaries¡¡as¡¡these¡£¡¡Nineteenth¡­century¡¡studies¡¡gave¡¡the¡¡first¡¡real¡¡clews¡¡to¡¡an¡¡understanding¡¡of¡¡the¡¡subject¡£¡¡These¡¡studies¡¡tended¡¡to¡¡authenticate¡¡the¡¡essential¡¡fact¡¡on¡¡which¡¡the¡¡legend¡¡of¡¡Kadmus¡¡was¡¡founded£»¡¡to¡¡the¡¡extent£»¡¡at¡¡least£»¡¡of¡¡making¡¡it¡¡probable¡¡that¡¡the¡¡later¡¡Grecian¡¡alphabet¡¡was¡¡introduced¡¡from¡¡Phoeniciathough¡¡not£»¡¡of¡¡course£»¡¡by¡¡any¡¡individual¡¡named¡¡Kadmus£»¡¡the¡¡latter¡¡being£»¡¡indeed£»¡¡a¡¡name¡¡of¡¡purely¡¡Greek¡¡origin¡£¡¡Further¡¡studies¡¡of¡¡the¡¡past¡¡generation¡¡tended¡¡to¡¡corroborate¡¡the¡¡ancient¡¡belief¡¡as¡¡to¡¡the¡¡original¡¡source¡¡of¡¡the¡¡Phoenician¡¡alphabet£»¡¡but¡¡divided¡¡scholars¡¡between¡¡two¡¡opinions£º¡¡the¡¡one¡¡contending¡¡that¡¡the¡¡Egyptian¡¡hieroglyphics¡¡were¡¡the¡¡source¡¡upon¡¡which¡¡the¡¡Phoenicians¡¡drew£»¡¡and¡¡the¡¡other¡¡contending¡¡with¡¡equal¡¡fervor¡¡that¡¡the¡¡Babylonian¡¡wedge¡¡character¡¡must¡¡be¡¡conceded¡¡that¡¡honor¡£¡¡But£»¡¡as¡¡has¡¡often¡¡happened¡¡in¡¡other¡¡fields¡¡after¡¡years¡¡of¡¡acrimonious¡¡controversy£»¡¡a¡¡new¡¡discovery¡¡or¡¡two¡¡may¡¡suffice¡¡to¡¡show¡¡that¡¡neither¡¡contestant¡¡was¡¡right¡£¡¡After¡¡the¡¡Egyptologists¡¡of¡¡the¡¡school¡¡of¡¡De¡¡Rouge£§1£§¡¡thought¡¡they¡¡had¡¡demonstrated¡¡that¡¡the¡¡familiar¡¡symbols¡¡of¡¡the¡¡Phoenician¡¡alphabet¡¡had¡¡been¡¡copied¡¡from¡¡that¡¡modified¡¡form¡¡of¡¡Egyptian¡¡hieroglyphics¡¡known¡¡as¡¡the¡¡hieratic¡¡writing£»¡¡the¡¡Assyriologists¡¡came¡¡forward¡¡to¡¡prove¡¡that¡¡certain¡¡characters¡¡of¡¡the¡¡Babylonian¡¡syllabary¡¡also¡¡show¡¡a¡¡likeness¡¡to¡¡the¡¡alphabetical¡¡characters¡¡that¡¡seemingly¡¡could¡¡not¡¡be¡¡due¡¡to¡¡chance¡£¡¡And¡¡then£»¡¡when¡¡a¡¡settlement¡¡of¡¡the¡¡dispute¡¡seemed¡¡almost¡¡hopeless£»¡¡it¡¡was¡¡shown¡¡through¡¡the¡¡Egyptian¡¡excavations¡¡that¡¡characters¡¡even¡¡more¡¡closely¡¡resembling¡¡those¡¡in¡¡dispute¡¡had¡¡been¡¡in¡¡use¡¡all¡¡about¡¡the¡¡shores¡¡of¡¡the¡¡Mediterranean£»¡¡quite¡¡independently¡¡of¡¡either¡¡Egyptian¡¡or¡¡Assyrian¡¡writings£»¡¡from¡¡periods¡¡so¡¡ancient¡¡as¡¡to¡¡be¡¡virtually¡¡prehistoric¡£¡¡Coupled¡¡with¡¡this¡¡disconcerting¡¡discovery¡¡are¡¡the¡¡revelations¡¡brought¡¡to¡¡light¡¡by¡¡the¡¡excavations¡¡at¡¡the¡¡sites¡¡of¡¡Knossos¡¡and¡¡other¡¡long¡­buried¡¡cities¡¡of¡¡the¡¡island¡¡of¡¡Crete¡££§2£§¡¡These¡¡excavations£»¡¡which¡¡are¡¡still¡¡in¡¡progress£»¡¡show¡¡that¡¡the¡¡art¡¡of¡¡writing¡¡was¡¡known¡¡and¡¡practised¡¡independently¡¡in¡¡Crete¡¡before¡¡that¡¡cataclysmic¡¡overthrow¡¡of¡¡the¡¡early¡¡Greek¡¡civilization¡¡which¡¡archaeologists¡¡are¡¡accustomed¡¡to¡¡ascribe¡¡to¡¡the¡¡hypothetical¡¡invasion¡¡of¡¡the¡¡Dorians¡£¡¡The¡¡significance¡¡of¡¡this¡¡is¡¡that¡¡the¡¡art¡¡of¡¡writing¡¡was¡¡known¡¡in¡¡Europe¡¡long¡¡before¡¡the¡¡advent¡¡of¡¡the¡¡mythical¡¡Kadmus¡£¡¡But¡¡since¡¡the¡¡early¡¡Cretan¡¡scripts¡¡are¡¡not¡¡to¡¡be¡¡identified¡¡with¡¡the¡¡scripts¡¡used¡¡in¡¡Greece¡¡in¡¡historical¡¡times£»¡¡whereas¡¡the¡¡latter¡¡are¡¡undoubtedly¡¡of¡¡lineal¡¡descent¡¡from¡¡the¡¡Phoenician¡¡alphabet£»¡¡the¡¡validity¡¡of¡¡the¡¡Kadmus¡¡legend£»¡¡in¡¡a¡¡modified¡¡form£»¡¡must¡¡still¡¡be¡¡admitted¡£¡¡As¡¡has¡¡just¡¡been¡¡suggested£»¡¡the¡¡new¡¡knowledge£»¡¡particularly¡¡that¡¡which¡¡related¡¡to¡¡the¡¡great¡¡antiquity¡¡of¡¡characters¡¡similar¡¡to¡¡the¡¡Phoenician¡¡alphabetical¡¡signs£»¡¡is¡¡somewhat¡¡disconcerting¡£¡¡Its¡¡general¡¡trend£»¡¡however£»¡¡is¡¡quite¡¡in¡¡the¡¡same¡¡direction¡¡with¡¡most¡¡of¡¡the¡¡new¡¡archaeological¡¡knowledge¡¡of¡¡recent¡¡decades¡­that¡¡is¡¡to¡¡say£»¡¡it¡¡tends¡¡to¡¡emphasize¡¡the¡¡idea¡¡that¡¡human¡¡civilization¡¡in¡¡most¡¡of¡¡its¡¡important¡¡elaborations¡¡is¡¡vastly¡¡older¡¡than¡¡has¡¡hitherto¡¡been¡¡supposed¡£¡¡It¡¡may¡¡be¡¡added£»¡¡however£»¡¡that¡¡no¡¡definite¡¡clews¡¡are¡¡as¡¡yet¡¡available¡¡that¡¡enable¡¡us¡¡to¡¡fix¡¡even¡¡an¡¡approximate¡¡date¡¡for¡¡the¡¡origin¡¡of¡¡the¡¡Phoenician¡¡alphabet¡£¡¡The¡¡signs£»¡¡to¡¡which¡¡reference¡¡has¡¡been¡¡made£»¡¡may¡¡well¡¡have¡¡been¡¡in¡¡existence¡¡for¡¡thousands¡¡of¡¡years£»¡¡utilized¡¡merely¡¡as¡¡property¡¡marks£»¡¡symbols¡¡for¡¡counting¡¡and¡¡the¡¡like£»¡¡before¡¡the¡¡idea¡¡of¡¡setting¡¡them¡¡aside¡¡as¡¡phonetic¡¡symbols¡¡was¡¡ever¡¡conceived¡£¡¡Nothing¡¡is¡¡more¡¡certain£»¡¡in¡¡the¡¡judgment¡¡of¡¡the¡¡present¡­day¡¡investigator£»¡¡than¡¡that¡¡man¡¡learned¡¡to¡¡write¡¡by¡¡slow¡¡and¡¡painful¡¡stages¡£¡¡It¡¡is¡¡probable¡¡that¡¡the¡¡conception¡¡of¡¡such¡¡an¡¡analysis¡¡of¡¡speech¡¡sounds¡¡as¡¡would¡¡make¡¡the¡¡idea¡¡of¡¡an¡¡alphabet¡¡possible¡¡came¡¡at¡¡a¡¡very¡¡late¡¡stage¡¡of¡¡social¡¡evolution£»¡¡and¡¡as¡¡the¡¡culminating¡¡achievement¡¡of¡¡a¡¡long¡¡series¡¡of¡¡improvements¡¡in¡¡the¡¡art¡¡of¡¡writing¡£¡¡The¡¡precise¡¡steps¡¡that¡¡marked¡¡this¡¡path¡¡of¡¡intellectual¡¡development¡¡can¡¡for¡¡the¡¡most¡¡part¡¡be¡¡known¡¡only¡¡by¡¡inference£»¡¡yet¡¡it¡¡is¡¡probable¡¡that¡¡the¡¡main¡¡chapters¡¡of¡¡the¡¡story¡¡may¡¡be¡¡reproduced¡¡with¡¡essential¡¡accuracy¡£

FIRST¡¡STEPS¡¡For¡¡the¡¡very¡¡first¡¡chapters¡¡of¡¡the¡¡story¡¡we¡¡must¡¡go¡¡back¡¡in¡¡imagination¡¡to¡¡the¡¡prehistoric¡¡period¡£¡¡Even¡¡barbaric¡¡man¡¡feels¡¡the¡¡need¡¡of¡¡self¡­expression£»¡¡and¡¡strives¡¡to¡¡make¡¡his¡¡ideas¡¡manifest¡¡to¡¡other¡¡men¡¡by¡¡pictorial¡¡signs¡£¡¡The¡¡cave¡­dwellers¡¡scratched¡¡pictures¡¡of¡¡men¡¡and¡¡animals¡¡on¡¡the¡¡surface¡¡of¡¡a¡¡reindeer¡¡horn¡¡or¡¡mammoth¡¡tusk¡¡as¡¡mementos¡¡
СÌáʾ£º°´ »Ø³µ [Enter] ¼ü ·µ»ØÊéÄ¿£¬°´ ¡û ¼ü ·µ»ØÉÏÒ»Ò³£¬ °´ ¡ú ¼ü ½øÈëÏÂÒ»Ò³¡£ ÔÞһϠÌí¼ÓÊéÇ©¼ÓÈëÊé¼Ü