There is a single light of science, and to brighten it anywhere is to brighten it everywhere

When, however, the lay public rallies round an idea that is denounced by distinguished but elderly scientists and supports that idea with great fervor and emotion - the distinguished but elderly scientists are then, after all, probably right

I write for the same reason I breathe - because if I didn't, I would die.

He had read much, if one considers his long life; but his contemplation was much more than his reading. He was wont to say that if he had read as much as other men he should have known no more than other men.

The trouble is that racial stereotypes, unfavourable to everyone but white men of northwest European extraction, were completely accepted, and indeed, scarcely noted in those days of only forty years ago [the 1930s] (except perhaps by the members of the groups victimized thereby).

That we have come as far as we have in forty years [the 1930s to the 1970s] is hopeful, though I believe it is more through the fact that Hitler's excesses made racism poisonous to any humane individual than through our own virtue. That we have much farther to go is incontestable

Life is pleasant. Death is peaceful. It's the transition that's troublesome

Suppose that we are wise enough to learn and know - and yet not wise enough to control our learning and knowledge, so that we use it to destroy ourselves? Even if that is so, knowledge remains better than ignorance

To surrender to ignorance and call it God has always been premature, and it remains premature today

Meanwhile, fears of universal disaster sank to an all-time low over the world