Age is only a number, a cipher for the records. A man can't retire his experience. He must use it. Experience achieves more with less energy and time.

There is perhaps no psychological skill more fundamental than resisting impulse.

Your word is the power that you have to create

You learn nothing form your successes except to think too much of yourself. It is from failure that all growth comes, provided you can recognize it, admit it, learn from it, rise above it, and then try again.

Curiosity is one of the permanent and certain characteristics of a vigorous intellect. Every advance into knowledge opens new prospects, and produces new incitements to farther progress.

Optimistic people generally feel that good things will last a long time and will have a beneficial effect on everything they do. And they think that bad things are isolated: They won't last too long and won't affect other parts of life.