Two truths cannot contradict one another.

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'.

Love is the unity of two souls but one spirit.

Socrates asked the key question: why should we be moral?

Tradition is not only bending down, or process of benign transmission. It is also a conflict between past genius and present aspiration in which the price is literary survival or canonical inclusion.

Farming is a most senseless pursuit a mere laboring in a circle. You sow that you may reap and then you reap that you may sow. Nothing ever comes of it.

His anger is easily excited and appeased, and he changes from hour to hour.

My own experience, though, as a business executive and as a governor, tells me that businesses are interested in a lot more than a low tax rate when they decide where to locate.

We must take our friends as they are.

Oh what can ail thee, knight-at-arms, Alone and palely loitering?

The war in Iraq has as much to do with terrorism as the administration has to do with compassion.

Many people on our planet right now despair; they think we’ve reached a point where we’ve discovered most of the things. I’m going tell you right now: Please don’t despair.