Remember, no one can make you feel inferior without being related to you and repeatedly questioning why you're in nonprofit.

Every time you meet a situation you think at the time it is an impossibility and you go through the tortures of the damned, once you have met it and lived through it, you find that forever after you are freer than you were before.

Life has got to be lived - that's all there is to it. At seventy, I would say the advantage is that you take life more calmly. You know that 'this, too, shall pass!'

What we must learn to do is to create unbreakable bonds between the sciences and the humanities. We cannot procrastinate. The world of the future is in our making. Tomorrow is now.

It is impossible to be a cynic if you live a good deal with young people. Fundamentally, every young person has a feeling that the future is going to hold something of value.

talking too much is a far greater social fault than talking too little.

To leave the world richer—that is the ultimate success.