If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.

Take care of your body. It's the only place you have to live.

Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.

Sow a thought and you get an act; Sow an act and you get a habit; Sow a habit and you get a character; Sow a character and you get a destiny.

Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

History repeats itself, first as tragedy, second as farce.

When I let go of what I am, I become what I might be.

Too much of a good thing can be wonderful!

Last year I sang for the Queen of England, met the president of the United States, and got an Emmy and a star on The Walk of Fame. And what did I do? I was just being myself.

Money is better than poverty, if only for financial reasons.

This thing of being a hero, about the main thing to it is to know when to die.

Maybe this world is another planet?s hell.

When making your choice in life, do not neglect to live.

Any place I hang my head is home.

Between two evils, I always pick the one I never tried before.

It is not how old you are, but how you are old.

Hard work, disciplined habits, modesty in living, contentment and cheerfulness.

I would rather entertain and hope that people learned something than educate people and hope they were entertained.

Anything I've done up till 27 May 1999 was kind of an illusion, existing without living. My daughter, the birth of my daughter, gave me life.

I am an American; free born and free bred, where I acknowledge no man as my superior, except for his own worth, or as my inferior, except for his own demerit.

People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.