The human failing I would most like to correct is aggression.

I think those who have a terminal illness and are in great pain should have the right to choose to end their own life, and those that help them should be free from prosecution.

We are in danger of destroying ourselves by our greed and stupidity. We cannot remain looking inwards at ourselves on a small and increasingly polluted and overcrowded planet.

God not only plays dice, he throws them in the corner where you can't see them.

We have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.

Disability can be no handicap.

Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.