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

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.

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.

Fourier is a mathematical poem.

Surely a pretty woman never looks prettier than when making tea.

Positive thinking is more than just a tagline. It changes the way we behave. And I firmly believe that when I am positive, it not only makes me better, but it also makes those around me better.

As water collected in a tank gets pure by filtration, so accumulated wealth is preserved by being employed in charity.

Children are wise in a funny kind of way. They haven't developed so many vested interests of self. There is a wisdom, a lack of self-consciousness, that is innocence.

The security challenge is related to the progress and advance we make in the political process.

What is most important is your Spirit. Why identify with anything else but your own spirit? You cannot get money out of it. No. The joy of Spirit is the reward of Spirit.

I have never been a celibate. If people believe so, that is their foolishness.

"Choosing to be with you, isn't a difficult decision, Jacqueline"... "It's easy. Incredibly easy."

Basically that was the moment when I thought I'd like to do this forever. I never changed my mind.