I am content in my later years. I have kept my good humor and take neither myself nor the next person seriously.

I am convinced that He [God] does not play dice.

I am not saying the U.S. should not manufacture and stockpile the bomb, for I believe that it must do so; it must be able to deter another nation from making an atomic attack.

I am only coming to Princeton to research, not to teach. There is too much education altogether, especially in American schools. The only rational way of educating is to be an example – of what to avoid, if one can’t be the other sort.

I am opposed to examinations—they only deter from the interest in studying. No more than two exams should be given throughout a student’s [college] career. I would hold seminars, and if the young people are interested and listen, I would give them a diploma.

I am the same ardent pacifist I was before. But I believe that the tool of refusing military service can be advocated again in Europe only when the military threat from aggressive dictatorships toward democratic countries has ceased to exist.

I believe in Spinoza’s God, Who reveals Himself in the lawful harmony of the world, not in a God who concerns himself with the fate and the doings of mankind.

I believe that all creatures who can have young ones together are very much the same.