Studies indicate that the one quality all successful people have is persistence.

A person's self-concept is the core of his personality.

Scientists still know less about what attracts men than they do about what attracts mosquitoes.

As a celebrity, you get a certain number of free passes. You're actually in a better position if you're a celebrity because people care.

If Shakespeare had to go on an author tour to promote Romeo and Juliet, he never would have written Macbeth.

If your energy is as boundless as your ambition, total commitment may be a way of life you should seriously consider.

Don't fool yourself that you are going to have it all. You are not. Psychologically, having it all is not even a valid concept. The marvelous thing about human beings is that we are perpetually reaching for the stars. The more we have, the more we want. And for this reason, we never have it all.