Ludwig Wittgenstein

A philosopher who is not taking part in discussions is like a boxer who never goes into the ring.

Never stay up on the barren heights of cleverness, but come down into the green valleys of silliness.

A new word is like a fresh seed sown on the ground of the discussion.

Outward judgment often fails, inward judgment never.

Well, I actually wrote her a letter a couple of days ago congratulating her. The tone I tried to convey in the letter is, look, you are a part of a great American historical process.

If approval was a criterion in this country, nothing would ever get done.