This ability to incorporate the past gives the sharpest diagnostic tool, if one asks whether a body of knowledge is a science or not. Do present practitioners have to go back to an original work of the past? Or has it been incorporated? ... Science is cumulative, and embodies its past.

I should never have made a good scientist, but I should have made a perfectly adequate one.

There is, of course, no complete solution. But we can do something. The chief means open to us is education There is no excuse for letting another generation be as vastly ignorant, or as devoid of understanding and sympathy, as we are ourselves.

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.

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.

Well, we have seen a wonder. We ought to count our blessings.

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.