If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.

There does, in fact, appear to be a plan.

To put it boldly, it is the attempt at a posterior reconstruction of existence by the process of conceptualization.

Good acts are like good poems. One may easily get their drift, but they are not rationally understood.

A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.

Thought is the organizing factor in man, intersected between the causal primary instincts and the resulting actions.

Nature conceals her secrets because she is sublime, not because she is a trickster.