The average ground temperature of the Earth is impossible to measure since most of the Earth is ocean...So this average ground temperature is a fiction.

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.

Endure the storm, but don't forget to enjoy the rainbow and the thunder.

I dont know any people that like watching themselves. I prefer not to.

Law is always better than war.

We only do what feels right. If something feels forced or contrived, then we pull back. We remain the Foo Fighters.

The calculus is the story this [the Western] world first told itself as it became the modern world.

Scripture is a book about going to Heaven. It's not a book about how the heavens go.

You can't imagine hip-hop without the Black Panthers. Today, hopefully, the movement can be an inspiration to people. These were people who made mistakes but they were trying to change things.

Once you succeed in tennis, financially you become quite well off.

Have a day off, which is very rare in our line of work, but that's something we like to do. Like I said, it's a nice way to take your mind off the game and just go out and relax and have fun.

I love documentaries, I like observing real people.