Do not be embarrassed by your mistakes. Nothing can teach us better than our understanding of them. This is one of the best ways of self-education.

Intelligence is not normally distributed.

The only true happiness is to learn, to advance, and to improve.

A pessimist is somebody who complains about the noise when opportunity knocks.

If a problem is fixable, if a situation is such that you can do something about it, then there is no need to worry. If it's not fixable, then there is no help in worrying. There is no benefit in worrying whatsoever.

The measure of who we are is what we do with what we have

Wherever you go, no matter what the weather, always bring your own sunshine.