The world of the happy is quite different from that of the unhappy.

You can't think decently if you're not willing to hurt yourself

The common behavior of mankind is the system of reference by means of which we interpret an unknown language.

If I have exhausted the justifications, I have reached bedrock and my spade is turned. Then I am inclined to say: 'This is simply what I do.

Philosophy just puts everything before us, and neither explains nor deduces anything.-Since everything lies open to view there is nothing to explain

The fact that we can describe the motions of the world using Newtonian mechanics tell us nothing about the world. The fact that we do, does tell us something about the world.

When philosophers use a word--"knowledge," "being," "object," "I," "proposition," "name"--and try to grasp the essence of the thing, one must always ask oneself: is the word ever actually used in this way in the language-game which is its original home?--What we do is to bring words back from their metaphysical to their everyday use.