The 'clean energy' challenge deserves a commitment akin to the Manhattan project or the Apollo moon landing.

In future, children won't perceive the stars as mere twinkling points of light: they'll learn that each is a 'Sun', orbited by planets fully as interesting as those in our Solar system.

Absence of evidence is not evidence of absence.

It will not be humans who watch the sun's demise, six billion years from now. Any creatures that then exist will be as different from us as we are from bacteria or amoebae.

I think a few hundred years from now we'll start having the 'posthuman' era of different species.

It's better to read first rate science fiction than second rate science-it's a lot more fun, and no more likely to be wrong.

We need to broaden our sympathies both in space and time - and perceive ourselves as part of a long heritage, and stewards for an immense future.

Science is a part of culture. Indeed, it is the only truly global culture because protons and proteins are the same all over the world, and it's the one culture we can all share.

I hope that by 2050 the entire solar system will have been explored and mapped by flotillas of tiny robotic craft.

I'm not myself religious but have no wish to insult or denigrate those who are.

Crucial to science education is hands-on involvement: showing, not just telling; real experiments and field trips and not just "virtual reality".

Anger, if not restrained, is frequently more hurtful to us than the injury that provokes it.

When I got the job on 'Lost,' I was a broke university student living in the crappiest part of town, with a duct-taped back window on a broken-down car. I existed on peanut butter and tea.

One's own self is well hidden from one's own self; of all mines of treasure, one's own is the last to be dug up.

The original pilot script [ of "Mary and Jane"], we literally just wrote for fun. It was, let's just do this.

I believe in censorship. I made a fortune out of it.

Socrates' fame spread all over Greece, and the most respected and educated men from all around came to him, in order to enjoy his friendly company and instruction.

If it went on the ballot in Colorado, I would vote to lower the drinking age.

Two criminals were crucified with Christ. One was saved; do not despair. One was not; do not presume.

Always make your needs and expectations known,she used to say. That way no one gets hurt.

We have, in our day, witnessed the birth of the Therapeutic State. This is perhaps the major implication of psychiatry as an institution of social control.