The mind has transformed the world, and the world is repaying it with interest. It has led man where he had no idea how to go.

Science is a collection of successful recipes.

To write regular verses destroys an infinite number of fine possibilities, but at the same time it suggests a multitude of distant and totally unexpected thoughts.

The universe is built on a plan the profound symmetry of which is somehow present in the inner structure of our intellect.

Sometime I think; and sometime I am.

The folly of mistaking a paradox for a discovery, a metaphor for a proof, a torrent of verbiage for a spring of capital truths, and oneself for an oracle, is inborn in us.

Poetry is to prose as dancing is to walking.