To see the convulsions, agonies and tortures of a poor fellow-creature, whom they cannot restore nor recompense, dying to gratify luxury and tickle callous and rank organs, must require a rocky heart, and a great degree of cruelty and ferocity. I cannot find any great difference between feeding on human flesh and feeding on animal flesh, except custom and practice.
But, strictly speaking, this mythology was no essential part of ancient religion, for it had no sacred sanction and no binding force on the worshippers.