For me a simple message, to think and act with courage, independence and imagination.

Before God we are all equally wise - and equally foolish.

There is, however, one other human right which is infrequently mentioned but which seems to be destined to become very important: this is the right, or the duty, of the individual to abstain from cooperating in activities which he considers wrong or pernicious.

Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.

Imagination without knowledge may create beautiful things, knowledge without imagination can create only perfect ones.

Strive not to be a success, but rather to be of value.

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