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A dreamer is one who can only find his way by moonlight, and his punishment is that he sees the dawn before the rest of the world.
A good mathematician should be both rigorous and imaginative.
Philosophy ought really to be written only as a form of poetry.
The only way to find out anything about what kinds of books people would like to read is to publish books and see what happens.
No matter how complex or refined, all behavior is to be explained in terms of stimulus and response.