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

The best thinking has been done in solitude. The worst has been done in turmoil.

I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.

Nobody knows whether our personalities pass on to another existence or sphere, but if we can evolve an instrument so delicate to be manipulated by our personality as it survives in the next life such an instrument ought to record something.

My mother was the making of me.

Everyone steals in commerce and industry. I've stolen a lot, myself. But I know how to steal! They don't know how to steal!

There is far more danger in public than in private monopoly, for when Government goes into business it can always shift its losses to the taxpayers. Government never makes ends meetand that is the first requisite of business.