The only path by which another person can upset you is through your own thought.

Anyone who has never made a mistake has never tried anything new.

Part of me suspects that I'm a loser, and the other part of me thinks I'm God Almighty.

A man is but the product of his thoughts. What he thinks he becomes.

Change your thoughts, and you change your destiny.

A clever person solves a problem. A wise person avoids it.

I have no special talents. I am only passionately curious.

If you can't explain it to a six year old, you don't understand it yourself.

Only a life lived for others is a life worthwhile.