If appearances were things in themselves, then no human being could gather from the succession of presentations how their manifold is combined in the object.

Wisdom's lectures were incoherent in a carefully styled, wholly intelligible manner, which made it possible to profit from the fantastic incoherences of Wittgenstein.

Every man gets a narrower and narrower field of knowledge in which he must be an expert in order to compete with other people. The specialist knows more and more about less and less and finally knows everything about nothing.

Philosophy does not result in 'philosophical propositions', but rather in the clarification of propositions.

We are alone, absolutely alone on this chance planet: and, amid all the forms of life that surround us, not one, excepting the dog, has made an alliance with us.

If men were born free, they would, so long as they remained free, form no conception of good and evil.

We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.

Love that is forced is never true love.

It is peculiar to mankind to transcend mankind.

We can judge the heart of a man by his treatment of animals.