There have already been published by the bucketsful such brazen lies and utter fictions about me that I would long since have gone to my grave if I had allowed myself to pay attention to them.

Do you believe in miracles? Well, you should. In fact, life itself is a big miracle. There are so many things that are beyond our understanding. There are two ways to live: you can live as if nothing is a miracle; you can live as if everything is a miracle.

Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world.

Learn from yesterday, live for today.

The idea of a personal God is an anthropological concept which I am unable to take seriously.

I am also convinced that one gains the purest joy from spirited things only when they are not tied in with earning one's livelihood.

What a deep faith in the rationality of the structure of the world and what a longing to understand even a small glimpse of the reason revealed in the world there must have been in Kepler and Newton to enable them to unravel the mechanism of the heavens in long years of lonely work!