When you can measure what you are speaking about, and express it in numbers, you know something about it.

Can you measure it? Can you express it in figures? Can you make a model of it? If not, your theory is apt to be based more upon imagination than upon knowledge.

Overwhelmingly strong proofs of intelligent and benevolent design lie around us... the atheistic idea is so nonsensical that I cannot put it into words.

Fourier is a mathematical poem.

There is nothing new to be discovered in physics now. All that remains is more and more precise measurement.

Mathematics is the only true metaphysics.

Do not imagine that mathematics is hard and crabbed, and repulsive to common sense. It is merely the etherealization of common sense.