Every star may be a sun to someone.

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.

They don't know the meaning of danger or fear or pain. It's only their pride that can be truly hurt.

I was always the girl who wore the mismatching socks, frizzy hair, ponytail I wouldn't take out for a week, and cutoff jean shorts that were at my knees.

The heart, not the head, must be the guide.

Our natures lie in motion, without which we die.

Discontent is the wheel that moves people forward.

As long as there is poverty in this world, no man can be totally rich even if he has a billion dollars.

That girl had the subtlety of a Spencer’s Gifts shop.

How is it having more control if there are young people stifled the opportunities that we had?

The rate of childhood obesity is just ridiculous. Anytime I can get involved with teaching them how to get physical exercise, I want to help in any way possible

I don't think that you should be per­fectly candid and frank about the intimate details of your personal life with the public at large. Subsequently, it creates consider­able personal problems.