Man owes his strength in the struggle for existence to the fact that he is a social animal.

Without "ethical culture", there is no salvation for humanity.

Innovation is everyones responsibility, not just R&Ds.

I believe my theory of relativity to be true. But it will only be proved for certain in 1981, when I am dead.

I cannot imagine a God who rewards and punishes the objects of his creation and is but a reflection of human frailty.

I have only two rules which I regard as principles of conduct. The first is: Have no rules. The second is: Be independent of the opinion of others.

Life isn't worth living, unless it is lived for someone else.