I feel as if one would only discover on one's death-bed what one ought to have lived for, and realise too late that one's life has been wasted. Any passionate and courageous life seems good in itself, yet one feels that some element of delusion is involved in giving so much passion to any humanly attainable object. And so irony creeps into the very springs of one's being.

There are certain things that our age needs. It needs, above all, courageous hope and the impulse to creativeness.

A generation educated in fearless freedom will have wider and bolder hopes than are possible to us

Organized people are just too lazy to look for things

The great majority of men and women, in ordinary times, pass through life without ever contemplating or criticising, as a whole, either their own conditions or those of the world at large.

Mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true.

In action, in desire, we must submit perpetually to the tyranny of outside forces; but in thought, in aspiration, we are free, free from our fellowmen, free from the petty planet on which our bodies impotently crawl, free even, while we live, from the tyranny of death.