To me, mathematics is like playing the violin. Some people can do it - others can't. If you don't have it, then there's no point in pretending.

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.

When you affirm big, believe big and pray big, putting faith into action, big things happen.

What is the size of this universe? The size of this universe is whatever the size of your dreams!

...music is the key to life

Your willpower to achieve the goal ought to stronger than any obstacle.

Our worst can become our best if mistakes are gathered like twigs of a bird's nest, giving one true foundation, a spiritual home to build their life upon.

Pale Death with impartial tread beats at the poor man's cottage door and at the palaces of kings.

Big girls need big diamonds.

Lawyers are fleas on the hide of human nature.

I wanted to end it now, like a bad TV show turned off in the middle.

We would be foolish and silly not to unite with people in the public health sector, the environmental community, [and] unions, to try to challenge corporate agriculture.