Music is our myth of the inner life.

The faith of scientists in the power and truth of mathematics is so implicit that their work has gradually become less and less observation, and more and more calculation.... But the facts which are accepted by virtue of these tests are not actually observed at all.

the wide discrepancy between reason and feeling may be unreal; it is not improbable that intellect is a high form of feeling - a specialized, intensive feeling about intuitions.

In human life, art may arise from almost any activity, and once it does so, it is launched on a long road of exploration, invention, freedom to the limits of extravagance, interference to the point of frustration, finally discipline, controlling constant change and growth.

Common-sense knowledge is prompt, categorical, and inexact.

The world of physics is essentially the real world construed by mathematical abstractions, and the world of sense is the real world construed by the abstractions which the sense-organs immediately furnish. To suppose that the "material mode" is a primitive and groping attempt at physical conception is a fatal error in epistemology.

Fire is a natural symbol of life and passion, though it is the one element in which nothing can actually live.