A bull is filled up by only a few acres of pasturage; a single wood suffices for more than one elephant; yet a human being feeds upon land and sea. Why is that? Has nature given us such an insatiable maw that although the bodies we are given are of modest size, we yet surpass the largest, most ravenous eaters of the animal world? That is not the case … It is not bodily hunger that runs up the bill but ambition. Therefore let us regard those who, as Sallust says, “heed the belly” as belonging to the race of animals rather than of humans.
Seneca (4 BC – AD 65), Moral Letters to Lucilius (60.2 – 4)