Few scientists would treat their cars as badly as they treat their conceptual schemes.

The world in which the kestrel moves, the world that it sees, is, and always will be, entirely beyond us. That there are such worlds all around us is an essential feature of our world.

Morally as well as physically, there is only one world, and we all have to live in it

Evolution is the creation-myth of our age. By telling us our origin it shapes our views of what we are. It influences not just our thought, but our feelings and actions too, in a way which goes far beyond its official function as a biological theory.

The trouble with human beings is not really that they love themselves too much; they ought to love themselves more. The trouble is simply that they don’t love others enough. "The End of Anthropocentrism?

Few scientists would treat their cars as badly as they treat their conceptual schemes.

None of us can study anything properly unless we do it with our whole being.