Simplification of modes of proof is not merely an indication of advance in our knowledge of a subject, but is also the surest guarantee of readiness for farther progress.

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.

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

Knowledge is a unique kind of property, indeed: you can share it with others, while still possessing it.

When in despair… when in fear… when in doubt… make something.

I willed myself to stay awake, but the rain was so soft and the room was so warm and his voice was so deep and his knee was so snug that I slept.

The opportunities that can be envisioned then created are endless.

Sometimes, divine revelation simply means adjusting your brain to hear what your heart already knows." Angels and Demons p. 484

You definitely meet a lot of extremely powerful, successful, wealthy people in Hollywood who are extremely miserable.

Is it surprising that modern English land law should resemble a chaos rather than a system?

Be honest! You are not going to want to admit energy loss. Someone is making it hard for you to look.

What you say should not just be truth now, but should be a proven truth tomorrow.

The Eighth Commandment was not made for bards.