One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.

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.

I feel infinite.

I define my journey, I enjoy it too.

You have a right to protest. But I don't quite understand why anybody thinks it's a good idea to deny somebody else the right to express his or her point of view.

Most people think small, because most people are afraid of success, afraid of making decisions, afraid of winning. And that gives people like me a great advantage.

It was hollow, my triumph, I could feel that, but I held on to it just the same.

Acting is easy and fun. You earn a lot of money, and you bang out with girls. The profession is given tremendous significance within our society, but it's not really worthy of it.

We are here to condemn the Palestinian occupation of the territories, but also to condemn the recent racist attack in France, against both Jews and Arabs.

Discipline is the habit of taking consistent action until one can perform with unconscious competence. Discipline weighs ounces but regret weighs tons.

Innovations are changes which cannot be decomposed into infinitessimal steps.

Granted, prostate exams aren't the most enjoyable things in the world, but they only last about 10 seconds. It's well worth it. Just think of the possible consequences if you don't get it done.