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esoinstinctively.Butitwouldbethemostseriouserrortosuppose
thatthegreaternumberofinstinctshavebeenacquiredbyhabitinone
generationandthentransmittedbyinheritancetosucceeding
generations.Itcanbeclearlyshownthatthemostwonderfulinstincts
withwhichweareacquaintednamelythoseofthehive-beeandof
manyantscouldnotpossiblyhavebeenthusacquired.
Itwillbeuniversallyadmittedthatinstinctsareasimportantas
OriginofSpeciesINSTINCT182
corporealstructureforthewelfareofeachspeciesunderitspresent
conditionsoflife.Underchangedconditionsoflifeitisatleastpossible
thatslightmodificationsofinstinctmightbeprofitabletoaspecies;and
ifit canbe shownthat instincts do vary ever solittlethenIcansee no
difficultyinnaturalselectionpreservingandcontinuallyaccumulating
variationsofinstincttoanyextentthatmaybeprofitable.Itisthusas
Ibelievethatallthemostcomplexandwonderfulinstinctshave
originated.Asmodificationsofcorporealstructurearisefromandare
increasedbyuseorhabitandarediminishedorlostbydisusesoI
donotdoubtithasbeenwithinstincts.ButIbelievethattheeffectsof
habitareofquitesubordinateimportancetotheeffectsofthenatural
selectionofwhatmaybecalledaccidentalvariationsofinstincts;�Cthat
isofvariationsproducedbythesa,[link widoczny dla zalogowanych]yilai：
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