To understand a sentence means to understand a language. To understand a language means to be master of a technique.

Don't for heaven's sake, be afraid of talking nonsense! But you must pay attention to your nonsense.

Don't ask what it means, but rather how it is used.

Genius is talent exercised with courage.

In order to draw a limit to thinking, we should have to think both sides of this limit.

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.

How hard I find it to see what is right in front of my eyes!