A diamond is a piece of coal that stuck to the job

I did not fail two thousand times. I merely found two thousand ways not to make a lightbulb.

The greatest invention in the world is the mind of a child.

The inventor tries to meet the demand of a crazy civilization.

The only time I really become discouraged is when I think of all the things I would like to do and the little time I have in which to do them.

Barring serious accidents, if you are not preoccupied with worry and you work hard, you can look forward to a reasonably lengthy existence.... Its not the hard work that kills, its the worrying that kills.

You can't realize your dreams unless you have one to begin with.