I am acutely aware of the fact that the marriage between mathematics and physics, which was so enormously fruitful in past centuries, has recently ended in divorce.

You ask: what is the meaning or purpose of life? I can only answer with another question: do you think we are wise enough to read God's mind?

The greatest unsolved mysteries are the mysteries of our existence as conscious beings in a small corner of a vast universe.

If you want to have a program for moving out into the universe, you have to think in centuries not in decades.

A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering.

Technology must be guided and driven by ethics if it is to do more than provide new toys for the rich.

The idea that global warming is the most important problem facing the world is total nonsense and is doing a lot of harm.

Unfortunately the global warming hysteria, as I see it, is driven by politics more than by science.

In the end it is how you fight, as much as why you fight, that makes your cause good or bad.

So long as you have courage and a sense of humor, it is never too late to start life afresh.

Technology is a gift of God. After the gift of life it is perhaps the greatest of God's gifts. It is the mother of civilizations, of arts and of sciences.

Happiness is having a large, loving, caring, close-knit family in another city.

The point of modernity is to live a life without illusions while not becoming disillusioned

Would that the dead were not dead! But there is grass that must be eaten, pellets that must be chewed, hraka that must be passed, holes that must be dug, sleep that must be slept.

We must face the fact that the preservation of individual freedom is incompatible with a full satisfaction of our views of distributive justice.

Wish not so much to live long as to live well.

I hate Dr Phil. Dr Phil told me to express my feelings, so I'm expressing them.

I'm a very good sleeper.

One of God's main purposes for your life is to fill you with so much of His love that it overflows onto others.

The Proverbs 31 woman is not the model of a perfect woman. She is the model of a committed woman under God.

Poland, of course, was the key country. I remember Stalin telling me that the plains of Poland were the invasion route of Europe to Russia and always had been, and therefore he had to control Poland.