Atoms are mainly empty space. Matter is composed chiefly of nothing.

Somewhere, something incredible is waiting to be known.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

For small creatures such as we the vastness is bearable only through love.

You have to know the past to understand the present.

Let the moonlight sparkyour creativity..your imagination..your energy..and your love for others.

As you get the rhythm you discern how to win.

God didn't make a mistake when He made you. You need to see yourself as God sees you.

In the present age doubt has become immune to faith and faith has dissociated itself from doubt.

What is the past, after all, but a vast sheet of darkness in which a few moments, pricked apparently at random, shine?

Don't be (dis.grun.tled), disgruntled that someone else is more successful than you are. Let their success motivate you to become successful.

The secret of success is to realize that the crisis on our planet is much larger than just deciding what to do with your own life.

The stunts on the ground I can do, but I've never been good with heights.

I am the president now, the president of everybody.

I'm pretty much an open book. I am a fanatic golfer and golf nut. If I have three free hours any day, my first choice is to run to the golf course if the weather is nice.