If you always put limit on everything you do, physical or anything else, it will spread into your work and into your life. There are no limits. There are only plateaus, and you must not stay there, you must go beyond them.

Life well spent is long.

Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.

As a well-spent day brings happy sleep, so life well used brings happy death.

Don't go around saying the world owes you a living. The world owes you nothing. It was here first.

All you need in this life is ignorance and confidence; then success is sure.

Whenever you find that you are on the side of the majority, it is time to reform.

Never let your schoolin' interfere with your education.

Just as courage imperils life, fear protects it.

I can teach anybody how to get what they want out of life. The problem is I can't find anybody who can tell me what they want.