Uttering a word is like striking a note on the keyboard of the imagination.

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

I might say: if the place I want to get to could only be reached by way of a ladder, I would give up trying to get there. For the place I really have to get to is a place I must already be at now. Anything that I might reach by climbing a ladder does not interest me.

Black seems to make a colour cloudy, but darkness doesn't. A ruby could thus keep getting darker without ever becoming cloudy; but if it became blackish red, it would become cloudy.

If, for example, you were to think more deeply about death, then it would be truly strange if, in so doing, you did not encounter new images.

What has history to do with me? Mine is the first and only world! I want to report how I find the world. What others have told me about the world is a very small and incidental part of my experience. I have to judge the world, to measure things.

The aspects of a thing that are most important to us are hidden to us because of their simplicity and familiarity.