The person who kills for fun is announcing that, could he get away with it, he'd kill you for fun. Your...life may be of no consequence to anyone else but is invaluable to you because it's the only one you've got. Exactly the same is true of each individual deer, hare, rabbit, fox, fish, pheasant and butterfly. Humans should enjoy their own lives, not taking others'.

To argue that we humans are capable of complex multifarious thought and feeling, whereas the sheep's perception is probably limited by lowly sheepish perceptions, is no more to the point than if I were to slaughter and eat you on the grounds that I am a sophisticated personality able to enjoy Mozart, formal logic and cannibalism, whereas your imaginative world seems confined to True Romances and tinned spaghetti.

A medical profession founded on callousness to the pain of the other animals may eventually destroy its own sensibility to the pain of humans.

I refuse absolutely to consign the whole male sex to the nursery. ... I obdurately insist on believing that some men are my equals.

The bullfighter who torments a bull to death and then castrates it of an ear has neither proved nor increased his own virility; he has merely demonstrated that he is a butcher with balletic tendencies.

In a sense, the first (if not necessarily the prime) function of a novelist, of ANY artist, is to entertain. If the poem, painting, play or novel does not immediately engage one's surface interest then it has failed. Whatever else it may or may not be, art is also entertainment. Bad art fails to entertain. Good art does something in addition.

To us it seems incredible that the Greek philosophers should have scanned so deeply into right and wrong and yet never noticed the immorality of slavery. Perhaps 3000 years from now it will seem equally incredible that we do not notice the immorality of our own oppression of animals.