I think that in the discussion of natural problems we ought to begin not with the Scriptures, but with experiments, and demonstrations.

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'.

Nothing is going to work out unless you step up and make it happen.

You are your own travel light.

But I was going to learn the hardest lesson in life: that those whoare closest to you, always betray you first.

To love means not to impose your own powers on your fellow man but offer him your help. And if he refuses it to be proud that he can do it on his own strength.

You take a plug and put it in a socket, and that's what the theatre is-it lights up right away. You speak, and they respond immediately.

Social marketing is now a 24-7 job.

The presidency is not an entry-level electoral job.

Real pain can alone cure us of imaginary ills.

What we all want is public safety. We don't want rhetoric that's framed through ideology.

I think it is in the nature of individuals and individual entities not to self-correct.