If we want to go to space with humans, that's for fun not for science. Human adventures in space are just sporting events.

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.

Do unto the other feller the way he'd like to do unto you an' do it fust.

I was pretty bad. When I first was diagnosed with kidney failure, my function - the function of my kidney was less than 8 percent.

Nobody has ever expected me to be President. In my poor, lean, lank face, nobody has ever seen that any cabbages were sprouting out.

To love someone, why do you need society's approval and permission?

Make everyday decisions from a place of love.

I basically think that I'm a fairly nice, normal person with just a few eccentricities.

None shall be saved by Christ but those only who work out their own salvation while God is working in them by His truth and His Holy Spirit. We cannot do without God; and God will not do without us.

The variations I've composed on the graceful Neapolitan ditty, 'Oh Mamma, Mama Cara,' outshine everything. I can't describe it

I like to give my actors a lot of room.

I want to work for a long, long time and keep growing in my work, and if I am very lucky and very blessed, maybe somewhere along the line there will be one movie in there that becomes a classic.