Of course, long-distance running has to do with the fact that we're hunters.

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.

Work is when you confront the problems you might otherwise be tempted to run away from

be kind, even when others are not, It empowers them to become a better version of themselves.

As she stood in the darkened room and watched my sister and father, I knew one of things that heaven meant. I had a choice, and it was not to divide my family in my heart.

I don't speak for others and they don't speak for me.

A lot of people have the answers after the results come in.

Every age has a kind of universal genius, which inclines those that live in it to some particular studies.

Feeling free, let us fly, into the boundless, beyond the sky, for we were born to never die.

Stupidity would not be absolute stupidity did it not fear intelligence.

Competition pushes me to improve. If I see someone do a big trick, I try it.

I have drawn a very close bond to all the military people.