What exactly is mathematics? Many have tried but nobody has really succeeded in defining mathematics; it is always something else.

Knowing what is big and what is small is more important than being able to solve partial differential equations.

Whatever is worth saying, can be stated in fifty words or less.

I am turned off when I see only formulas and symbols, and little text.

It is still an unending source of surprise for me how a few scribbles on a blackboard or on a piece of paper can change the course of human affairs.

Thoughts are steered in different ways.

The infinite we shall do right away. The finite may take a little longer.

The mathematicians know a great deal about very little and the physicists very little about a great deal.

It is most important in creative science not to give up. If you are an optimist you will be willing to "try" more than if you are a pessimist.

Do not lose your faith. A mighty fortress is our mathematics. Mathematics will rise to the challenge, as it always has.

Mathematics may be a way of developing physically, that is anatomically, new connections in the brain.

As a graduate student, I wrote a long paper connecting the dots between mathematical models of learning and language development in children. It was published in a major journal.

It's getting tougher and tougher to defeat ISIS, because they're in more and more places, more and more states, more and more nations.

It is easy to be a slave to the letter, and difficult to enter into the spirit; easy to obey a number of outward rules, difficult to enter intelligently and self-sacrificingly into the will of God.

Everybody knows the rules, even though some break those rules.

Servant-leader ship is all about making the goals clear and then rolling your sleeves up and doing whatever it takes to help people win. In that situation, they don't work for you, you work for them.

Think beer; drink beer.

The distortion of the truth bothers me.

The line between greatness and obscurity is very, very small.

Look, what a horse should have he did not lack, Save a proud rider on his back.

The only important thing I have to say is that my father never fought against his country.