Large increases in cost with questionable increases in performance can be tolerated only in race horses and fancy women.

If you can not measure it, you can not improve it.

If you study science deep enough and long enough, it will force you to believe in God.

Heavier-than-air flying machines are impossible.

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.

When you are face to face with a difficulty, you are up against a discovery.

In science there is only physics; all the rest is stamp collecting.

Radio has no future." "X-rays are clearly a hoax". "The aeroplane is scientifically impossible.

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

To measure is to know.

Fourier is a mathematical poem.

I can't think why fancy religions should have such a ghastly effect on one's grammar. It's a kind of intellectual rot that sets in, I'm afraid.

She couldn't be on his wavelength all the time. That's all. When you could recognize that and deal with it, you were on your way to an adult relationship.

There is a soul-jealousy that can be as frantic as any body-jealousy.

In fairness, you know, I'm a big believer in if your kid makes noise in the restaurant you should remove the child immediately.

Nothing goes far which has not the wings of love to make it buoyant, so that it can fly.

In banking or insurance trust is the only thing you have to sell.

Don't just analyze a problem - solve it.

Success is sometimes the outcome of a whole string of failures.

Kill the pig! Cut his throat! Kill the pig! Bash him in!