In the end it is how you fight, as much as why you fight, that makes your cause good or bad.

It's amazing how much progress there's been in China, and also India. Those are the places that really matter - they're half of the world's population. They're the places where things are enormously better now than they were 50 years ago. And I don't see anything that's going to stop that.

We must be careful not to discourage our twelve-year-olds by making them waste the best years of their lives preparing for examinations.

People who travel in China tell me that the mood there is still very upbeat, because their media is different from our media. Chinese media emphasize how well things are going and suppress the bad news and publish the good news.

In the history of science it has often happened that the majority was wrong and refused to listen to a minority that later turned out to be right.

For some days I quietly worked out in my own mind the metaphysics of Cosmic Unity. The more I thought about it, the more convinced I became that it was the living truth. It was logically incontrovertible. It provided for the first time a firm foundation for ethics. It offered mankind the radical change of heart and mind that was our only hope of peace at a time of desperate danger. Only one small problem remained. I must find a way to convert the world to my way of thinking.

We simply don't know yet what's going to happen to the carbon in the atmosphere.