Mathematics rightly viewed possesses not only truth but supreme beauty.
The taboo against nakedness is an obstacle to a decent attitude on the subject of sex.
(on A History of Western Philosophy) I was sometimes accused by reviewers of writing not a true history but a biased account of the events that I arbitrarily chose to write of. But to my mind, a man without a bias cannot write interesting history - if, indeed, such man exists.
Either man will abolish war, or war will abolish man.
Unrestricted nationalism is, in the long run, incompatible with world peace.
Science can teach us, and I think our hearts can teach us, no longer to look around for imaginary supporters, no longer to invent allies in the sky, but rather to look to our own efforts here below to make the world a fit place to live.