Preserve and cherish the pale blue dot, the only home we've ever known.

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.

The real trouble with reality is that there is no background music.

That which is not comprehended by the mind but by which the mind comprehends—know that...

I have a long-lasting gratitude and trust for what UNICEF does.

That's why you go into architecture - at least I did - to do things for people. I think most of us are idealists. You start out that way, anyway.

If you do not understand a man you cannot crush him. And if you do understand him, very probably you will not.

If only I could so live and so serve the world that after me there should never again be birds in cages.

People relate to you a lot more when you're honest and authentic - and that's hard to do in front of millions of people every week.

People residing within the cult of average don’t like to see others rise. It threatens their security, and spotlights their low self-worth. Go for great, no matter what they say.

Our self-acknowledgement, our dedication has to be bigger than our fear.

I like people who are constantly working hard, more than people who are constantly at their best.