I don't hold animals superior or even equal to humans. The whole case for behaving decently to animals rests on the fact that we are the superior species. We are the species uniquely capable of imagination, rationality, and moral choice - and that is precisely why we are under an obligation to recognize and respect the rights of animals.

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'.

The popular distinction between 'constructive' and 'destructive' criticism is a sentimentality: the mind too weak to perceive in what respects the bad fails is not strong enough to appreciate in what the good succeeds. To be without discrimination is to be unable to praise. The critic who lets you know that he always looks for something to like in works he discusses is not telling you anything about the works or about art; he is saying 'see what a nice person I am.

The fact that there are bigger injustices and wrongs doesn't make it right to sacrifice an innocent monkey. It doesn't alter the case at all.

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.

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.