They who depend upon manifest observations will philosophize better than those who persist in opinions repugnant to the senses.

Measure what can be measured, and make measurable what cannot be measured.

All truths are easy to understand once they are discovered; the point is to discover them.

I have never met a man so ignorant that I couldn't learn something from him.

The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.

I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forego their use.

The laws of nature are written by the hand of God in the language of mathematics.

Knowing thyself, that is the greatest wisdom.

To understand the Universe, you must understand the language in which it's written, the language of Mathematics.

In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man.

To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement 'I do not know'.

Some would be sages if they did not believe they were so already.

When you come into the world you have nothing... when you leave you have nothing... and in between there's the IRS.

Every eye is an eye, when you're doing the surgery there that is just as important as if you were doing eye surgery on the prime minster or the king.

Instead of idleness, vanity, or an intellect formed by the spoon-feeding of others, my girls have acquired energy, industry, and independence.

Liberals were just as engaged and using the rhetoric of a sort of a battle with the Soviets and with Communism in general, with an evil empire.

Your life starts to take shape at 30. You don't have to make excuses for who you are anymore.

I grew up with some kind of storytelling instinct, and when I write, my default setting is to find a story and then to tell it. It's the only way I know how to write.

We are all part of a vast sea of love. One indivisible mind.

Restless, and in desperate need of adventure, I quit my job at an insurance company to travel west with a couple of guys I smoked pot with, scandalizing my family.

Sarcasm is always at someone's expense.