Chaos is perhaps at the bottom of everything.

The scientific value of truth is not, however, ultimate or absolute. It rests partly on practical, partly on aesthetic interests. As our ideas are gradually brought into conformity with the facts by the painful process of selection,-for intuition runs equally into truth and into error, and can settle nothing if not controlled by experience,-we gain vastly in our command over our environment. This is the fundamental value of natural science

To be boosted by an illusion is not to live better than to live in harmony with the truth ... these refusals to part with a decayed illusion are really an infection to the mind.

Man is a gregarious animal, and much more so in his mind than in his body. He may like to go alone for a walk, but he hates to stand alone in his opinions.

If clearness about things produces a fundamental despair, a fundamental despair in turn produces a remarkable clearness or even playfulness about ordinary matters.

The profoundest affinities are those most readily felt.

One real world is enough.