I see a pattern, but my imagination cannot picture the maker of that pattern. I see a clock, but I cannot envision the clockmaker. The human mind is unable to conceive of the four dimensions, so how can it conceive of a God, before whom a thousand years and a thousand dimensions are as one?

One should guard against preaching to young people success in the customary form as the main aim in life. The most important motive for work in school and in life is pleasure in work, pleasure in its result, and the knowledge of the value of the result to the community.

The bitter and the sweet come from the outside, the hard from within, from one's own efforts.

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

The word 'God' is for me nothing more than the expression and product of human weaknesses, and religious scripture a collection of honourable, but still primitive legends which are nevertheless pretty childish. No interpretation, no matter how subtle, can (for me) change this.

The pursuit of knowledge for its own sake, an almost fanatical love of justice and the desire for personal independence -- these are the features of the Jewish tradition which make me thank my stars that I belong to it.

You teach me baseball and I'll teach you relativity...No we must not. You will learn about relativity faster than I learn baseball.