No one ought to feel surprise at much remaining as yet unexplained in regard to the origin of species and varieties, if he make due allowance for our profound ignorance in regard to the mutual relations of the many beings which live around us.
Inor ez litzateke harritu behar, ikusirik espezieen eta aldakien jatorriari buruz zenbat eta zenbat gauza azaltzeke geratzen diren, baldin gure inguruan bizi diren hainbat eta hainbat izakiren elkarren arteko harremanei buruz daukagun ezjakintza sakonaz jabetzen bada.