It is true that my parents were worried because I began to speak fairly late, so that they even consulted a doctor. I can't say how old I was - but surely not less than three.

You believe in a god that plays dice; I believe in law & order.

Some men spend a lifetime in an attempt to comprehend the complexities of women. Others pre-occupy themselves with somewhat simpler tasks, such as understanding the theory of relativity!

I never think of the future. It comes soon enough. When visiting the U.S. from Germany for a winter academic stay.

I became more and more convinced that even nature could be understood as a relatively simple mathematical structure.

Assumptions are made and most assumptions are wrong.

I know quite certainly that I myself have no special talent; curiosity, obsession and dogged endurance, combined with self-criticism, have brought me to my ideas.