In reflecting on them, every one must be struck with astonishment; for the same reasoning power which tells us that most parts and organs are exquisitely adapted for certain purposes, tells us with equal plainness that these rudimentary or atrophied organs are imperfect and useless.
Horiez gogoeta egiten duen edonork harri eta zur geratu behar du; izan ere, atal eta organo gehientsuak xede batzuetarako bikain egokituak direla dioskun arrazonamendu berak diosku, nabaritasun berdin-berdinez, organo aztarnazko edo enuldu horiek ezosoak eta alferrekoak direla.