With fame I become more and more stupid, which of course is a very common phenomenon.

You can't use an old map to explore a new world.

I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

In my relativity theory I set up a clock at every point in space, but in reality I find it difficult to provide even one clock in my room.

Knowledge of what is does not open the door directly to what should be.

It is not a lack of real affection that scares me away again and again from marriage. Is it a fear of the comfortable life, of nice furniture, of dishonor that I burden myself with, or even the fear of becoming a contented bourgeois.

My sailing system set sail, make it fast, no thoughts of energy or velocity, loll back, let boat drift.