As a child I was not interested in science. I was merely interested in things human, the human side of nature, if you like, and I continue to be interested in that. That's what motivates me.

If all the insects were to disappear from the earth, within 50 years all life on earth would end. If all human beings disappeared from the earth, within 50 years all forms of life would flourish.

There is hope in dreams, imagination, and in the courage of those who wish to make those dreams a reality.

Good parents give their children Roots and Wings. Roots to know where home is, wings to fly away and exercise what's been taught them.

[Who owns the patent on this vaccine?] Well, the people, I would say. There is no patent. Could you patent the sun?

Risks, I like to say, always pay off. You learn what to do, or what not to do.

Your dreams tell you what to do; your reason tells you how to do it.

It is always with excitement that I wake up in the morning wondering what my intuition will toss up to me, like gifts from the sea. I work with it and rely on it. It's my partner.

I see the triumph of good over evil as a manifestation of the error-correcting process of evolution.

The most important question we must ask ourselves is, 'Are we being good ancestors?'

I feel that the greatest reward for doing is the opportunity to do more.

See them so it seems that humanity is dead.

We are all flawed, my dear. Every one of us. And believe me, we've all made mistakes. You've just got to take a good hard look at yourself, change what needs to be changed, and move one, pet.

It's time to leave, though i've never really been arrived.

Hurricane Sandy is a disturbing sign of things to come. We must heed this warning and act quickly to solve the climate crisis. Dirty energy makes dirty weather.

A fellow oughtn't to let his family property go to pieces.

A Platonic friendship is perhaps only possible when one or other of the Platonists is in love with a third person.

The U.S., France, Germany and Canada have all responded to the financial crisis by boosting rather than cutting their science funding. The U.K. has not.

I got rid of all those reporters.

I think that the only ultimate guide we have is our conscience, and if the law of the land goes against our conscience I think we should disobey the law.

We seem to be young, in a very old Galaxy. We're like kids tiptoeing through a ruined mansion.