The most intractable problem today is not pollution or technology or war; but the lack of belief that the future is very much in the hands of the individual.

today's children are the first generation to grow up in a world that has the power to destroy itself.

Keeping even the most humble talent wrapped in a napkin becomes the more reprehensible the greater the emergency.

If I were to be taken hostage, I would not plead for release nor would I want my government to be blackmailed. I think certain government officials, industrialists and celebrated persons should make it clear they are prepared to be sacrificed if taken hostage. If that were done, what gain would there be for terrorists in taking hostages?

It is not until science has become a discipline to which the research ability of any mind from any class in society can be attracted that it can become rigorously scientific.

Contentment can be bought at a price that one can not possibly pay.

Man's most human characteristic is not his ability to learn, which he shares with many other species, but his ability to teach and store what others have developed and taught him.