In this sense it was less completely materialistic than the ideas of radicals like Robert Grant, but its implication that humans were just the last step in the ascent of animal life incensed many conservative thinkers.
U tom je smislu knjiga nešto manje materijalistička od radikalnih ideja poput onih Roberta Granta, no njezina implikacija da su ljudi samo posljednji korak u usponu životinjskoga života razbjesnila je mnoge konzervativne mislioce.