“If I had stayed for other people to make my tools and things for me, I had never made anything.”

I see I have made my self a slave to philosophy.

You have to make the rules, not follow them.

Tact is the art of making a point without making an enemy.

Where both are friends, it is right to prefer truth.

Opposite to godliness is atheism in profession, and idolatry in practice. Atheism is so senseless and odious to mankind, that it never had many professors.

Let me think – I wonder if an anvil will drop like an apple?

If the experiments which I urge be defective, it cannot be difficult to show the defects; but if valid, then by proving the theory, they must render all objections invalid.

When two forces unite, their efficiency double.

The best way to understanding is a few good examples.

The great ocean of truth lay all undiscovered before me.

The centre of the system of the world is immovable.

All knowledge and understanding of the Universe was no more than playing with stones and shells on the seashore of the vast imponderable ocean of truth.

Every body persists in a state of rest or of uniform motion in a straight line, unless it is compelled to change that state by forces having impact upon it.

An object that is at rest will tend to stay at rest. An object that is in motion will tend to stay in motion.

If I have ever made any valuable discoveries, it has been due more to patient attention, than to any other talent.

What goes up must come down.

Cutting prices or putting things on sale is not sustainable business strategy. The other side of it is that you can’t cut enough costs to save your way to prosperity.

In business, you take a swing and you hope that you hit a home run, but sometimes you strike out. Strikeouts and failures are important. Being down, getting punched in the gut every once in a while by life and coming back up, that’s accomplishment.

Any business today that embraces the status quo as an operating principle is going to be on a death march.

Let every man mind his own business.

The hardest thing about being in this business is just being able to be yourself. People act like there’s this one set of rules to follow to be a pop star and I think, ‘Well, you say I’m a pop star, so maybe that’s not true.’

I never really studied business in school. I kind of wish I had, but how boring is that?

The rule of my life is to make business a pleasure, and pleasure my business.

Well, you know, I was a human being before I became a businessman.