What will people of the future think of us? Will they say, as Roger Williams said of the Massachusetts Indians, that we were wolves with the minds of men? Will they think that we resigned our humanity? They will have the right.

I want a man who knows something about himself. And is appalled. And has to forgive himself to get along.

I was searching for something a little more than a dashing metaphor, a good deal less than a cultural map: and for those purposes the two cultures is about right.

A scientist has to be neutral in his search for the truth, but he cannot be neutral as to the use of that truth when found. If you know more than other people, you have more responsibility, rather than less.

It takes a very strong head to keep secrets for years and not go slightly mad. It isn't wise to be advised by anyone slightly mad.

Most of the scientists I have known well have felt - just as deeply as the non-scientists I have known well - that the individual condition of each is tragic. Each of us is alone: sometimes we escape from solitariness, through love or affection or perhaps creative moments, but those triumphs of life are pools of light we make for ourselves while the edge of the road is black: each of us dies alone.

When you think of the long and gloomy history of man, you will find more hideous crimes have been committed in the name of obedience than have ever been committed in the name of rebellion.