Never let yourself be seduced by any problem, no matter how difficult.

For the most part, I do the thing which my own nature prompts me to do. It is embarrassing to earn so much respect and love for it.

It is important to foster individuality, for only the individual can produce the new ideas.

The stakes are immense, the task colossal, the time is short. But we may hope - we must hope - that man's own creation, man's own genius, will not destroy him.

The basic laws of the universe are simple, but because our senses are limited, we can’t grasp them. There is a pattern in creation.

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

The only thing we can be certain of in this life is that we can be certain of nothing.