Men who think in lifetimes are of little use to statesmanship.

The science hangs like a gathering fog in a valley, a fog which begins nowhere and goes nowhere, an incidental, unmeaning inconvenience to passers-by.

I write to cover a frame of ideas.

Success is to be measured not by wealth, power, or fame, but by the ratio between what a man is and what he might be.

You have, let us say, a promising politician, a rising artist that you wish to destroy. Dagger or bomb are archaic, clumsy and unreliable - but teach him, inoculate him with chess.

In the scientific world I find just that disinterested devotion to great ends that I hope will spread at last through the entire range of human activity.

It may be that we exist and cease to exist in alternations, like the minute dots in some forms of toned printing or the succession of pictures on a cinema film. It may be that reality is an illusion of movement in an eternal, static, multidimensional universe. We may be only a story written on the ground of the inconceivable; the pattern on a rug beneath the feet of the incomprehensible.