Man is a credulous animal, and must believe something; in the absence of good grounds for belief, he will be satisfied with bad ones.

Scientific method, although in its more refined forms it may seem complicated, is in essence remarkably simply. It consists in observing such facts as will enable the observer to discover general laws governing facts of the kind in question. The two stages, first of observation, and second of inference to a law, are both essential, and each is susceptible of almost indefinite refinement. (1931)

I believe that when I die I shall rot, and nothing of my ego will survive.

The pure mathematician, like the musician, is a free creator of his world of ordered beauty.

The examination system, and the fact that instruction is treated mainly as a training for a livelihood, leads the young to regard knowledge from a purely utilitarian point of view as the road to money, not as the gateway to wisdom.

One's work is never so bad as it appears on bad days, nor so good as it appears on good days.

One of the main causes of trouble in the world is dogmatic and fanatical belief in some doctrine for which there is no adequate evidence