The stakes are immense, the task colossal, the time is short. But we may hope - we must hope - that man's own creation, man's own genius, will not destroy him.

If something is in me which can be called religious then it is the unbounded admiration for the structure of the world so far as our science can reveal it.

Imagination is more powerful than knowledge.

I never made one of my discoveries through the process of rational thinking

Innovation is not the product of logical thought, even though the final product is tied to a logical structure.

I have lived to prove Thoreau's contention that a man is rich in proportion to the number of things which he can afford to let alone.

The idle man does not know what it is to enjoy rest.