My mother was the making of me. She was so true and so sure of me, I felt that I had someone to live for - someone I must not disappoint. The memory of my mother will always be a blessing to me.

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

Great ideas originate in the muscles.

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.

The chief function of the body is to carry the brain around.

Youth doesn't take advice.

Not only will atomic power be released, but someday we will harness the rise and fall of the tides and imprison the rays of the sun.