on dreams-第3部分

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after　the　manner　of　cloud…shapes；　which　in　their　rapid　metamorphoses



one　compares　now　to　human　beings　and　a　moment　afterwards　to



centaurs。　Each　of　them　is　however；　as　has　been　said；　the　remnant　of



a　sensory　impression　taken　when　sense　was　actualizing　itself；　and　when



this；　the　true　impression；　has　departed；　its　remnant　is　still



immanent；　and　it　is　correct　to　say　of　it；　that　though　not　actually



Koriskos；　it　is　like　Koriskos。　For　when　the　person　was　actually



perceiving；　his　controlling　and　judging　sensory　faculty　did　not　call



it　Koriskos；　but；　prompted　by　this　＇impression＇；　called　the　genuine



person　yonder　Koriskos。　Accordingly；　this　sensory　impulse；　which；　when



actually　perceiving；　it　＇the　controlling　faculty＇　describes　（unless



completely　inhibited　by　the　blood）；　it　now　＇in　dreams＇　when



quasi…perceiving；　receives　from　the　movements　persisting　in　the



sense…organs；　and　mistakes　it…an　impulse　that　is　merely　like　the



true　＇objective＇　impression…for　the　true　impression　itself；　while



the　effect　of　sleep　is　so　great　that　it　causes　this　mistake　to　pass



unnoticed。　Accordingly；　just　as　if　a　finger　be　inserted　beneath　the



eyeball　without　being　observed；　one　object　will　not　only　present　two



visual　images；　but　will　create　an　opinion　of　its　being　two　objects；



while　if　it　＇the　finger＇　be　observed；　the　presentation　will　be　the



same；　but　the　same　opinion　will　not　be　formed　of　it；　exactly　so　it



is　in　states　of　sleep：　if　the　sleeper　perceives　that　he　is　asleep；　and



is　conscious　of　the　sleeping　state　during　which　the　perception　comes



before　his　mind；　it　presents　itself　still；　but　something　within　him



speaks　to　this　effect：　'the　image　of　Koriskos　presents　itself；　but　the



real　Koriskos　is　not　present'；　for　often；　when　one　is　asleep；　there　is



something　in　consciousness　which　declares　that　what　then　presents



itself　is　but　a　dream。　If；　however；　he　is　not　aware　of　being　asleep；



there　is　nothing　which　will　contradict　the　testimony　of　the　bare



presentation。



　　That　what　we　here　urge　is　true；　i。e。　that　there　are　such



presentative　movements　in　the　sensory　organs；　any　one　may　convince



himself；　if　he　attends　to　and　tries　to　remember　the　affections　we



experience　when　sinking　into　slumber　or　when　being　awakened。　He　will



sometimes；　in　the　moment　of　awakening；　surprise　the　images　which



present　themselves　to　him　in　sleep；　and　find　that　they　are　really



but　movements　lurking　in　the　organs　of　sense。　And　indeed　some　very



young　persons；　if　it　is　dark；　though　looking　with　wide　open　eyes；



see　multitudes　of　phantom　figures　moving　before　them；　so　that　they



often　cover　up　their　heads　in　terror。



　　From　all　this；　then；　the　conclusion　to　be　drawn　is；　that　the　dream



is　a　sort　of　presentation；　and；　more　particularly；　one　which　occurs　in



sleep；　since　the　phantoms　just　mentioned　are　not　dreams；　nor　is　any



other　a　dream　which　presents　itself　when　the　sense…perceptions　are



in　a　state　of　freedom。　Nor　is　every　presentation　which　occurs　in　sleep



necessarily　a　dream。　For　in　the　first　place；　some　persons　＇when



asleep＇　actually；　in　a　certain　way；　perceive　sounds；　light；　savour；



and　contact；　feebly；　however；　and；　as　it　were；　remotely。　For　there



have　been　cases　in　which　persons　while　asleep；　but　with　the　eyes



partly　open；　saw　faintly　in　their　sleep　（as　they　supposed）　the　light



of　a　lamp；　and　afterwards；　on　being　awakened；　straightway　recognized



it　as　the　actual　light　of　a　real　lamp；　while；　in　other　cases；



persons　who　faintly　heard　the　crowing　of　cocks　or　the　barking　of



dogs　identified　these　clearly　with　the　real　sounds　as　soon　as　they



awoke。　Some　persons；　too；　return　answers　to　questions　put　to　them　in



sleep。　For　it　is　quite　possible　that；　of　waking　or　sleeping；　while　the



one　is　present　in　the　ordinary　sense；　the　other　also　should　be　present



in　a　certain　way。　But　none　of　these　occurrences　should　be　called　a



dream。　Nor　should　the　true　thoughts；　as　distinct　from　the　mere



presentations；　which　occur　in　sleep　＇be　called　dreams＇。　The　dream



proper　is　a　presentation　based　on　the　movement　of　sense　impressions；



when　such　presentation　occurs　during　sleep；　taking　sleep　in　the　strict



sense　of　the　term。



　　There　are　cases　of　persons　who　in　their　whole　lives　have　never　had　a



dream；　while　others　dream　when　considerably　advanced　in　years；



having　never　dreamed　before。　The　cause　of　their　not　having　dreams



appears　somewhat　like　that　which　operates　in　the　case　of　infants；　and



＇that　which　operates＇　immediately　after　meals。　It　is　intelligible



enough　that　no　dream…presentation　should　occur　to　persons　whose



natural　constitution　is　such　that　in　them　copious　evaporation　is　borne



upwards；　which；　when　borne　back　downwards；　causes　a　large　quantity　of



motion。　But　it　is　not　surprising　that；　as　age　advances；　a　dream　should



at　length　appear　to　them。　Indeed；　it　is　inevitable　that；　as　a　change



is　wrought　in　them　in　proportion　to　age　or　emotional　experience；　this



reversal　＇from　non…dreaming　to　dreaming＇　should　occur　also。



　　　　　　　　　　　　　　　　　　　　　　　　　　　　　THE　END



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