Fooling around with alternating currents is just a waste of time. Nobody will use it, ever. It's too dangerous . . . it could kill a man as quick as a bolt of lightning. Direct current is safe.

Oh these mathematicians make me tired! When you ask them to work out a sum they take a piece of paper, cover it with rows of A's, B's, and X's and Y's ... scatter a mess of flyspecks over them, and then give you an answer that's all wrong!

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

Invention is 10% inspiration and 90% perspiration.

The very first thing an executive must have is a fine memory. Of course it does not follow that a man with a fine memory is necessarily a fine executive. But if he has the memory he has the first qualification, and if he has not the memory nothing else matters.

Maturity is often more absurd than youth and very frequently is most unjust to youth.

To get a great idea, come up with lots of them.