I make more mistakes than anyone else I know, and sooner or later, I patent most of them.

The perils of overwork are slight compared with the dangers of inactivity.

Success is 90% perspiration and 10% inspiration!

I start where the last man left off. What the mind of man can conceive and believe, the mind of a man can achieve.

The biggest failure of man is that he gives up before he realizes how close he was to success.

Your worth consists in what you are and not in what you have.

I have had a lot of success with failure