I, for my part, wonder of what sort of feeling, mind or reason that man was possessed who was first to pollute his mouth with gore, and to allow his lips to touch the flesh of a murdered being: who spread his table with the mangled forms of dead bodies, and claimed as daily food and dainty dishes what but now were beings endowed with movement, perception and with voice. …but for the sake of some little mouthful of flesh, we deprive a soul of the sun and light, and of that portion of life and time it had been born in to the world to enjoy.
PlutarchIf you declare that you are naturally designed for such a diet, then first kill for yourself what you want to eat. Do it, however, only through your own resources, unaided by cleaver or cudgel or any kind of ax
Plutarch