Success is based on imagination plus ambition and the will to work.

Be brave as your fathers before you. Have faith and go forward.

My mind is incapable of conceiving such a thing as a soul. I may be in error, and man may have a soul; but I simply do not believe it.

There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.

Accomplishing something provides the only real satisfaction in life.

Invention is 1% inspiration and 99% perspiration

The thing I lose patience with the most is the clock. Its hands move too fast