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.

They say President Wilson has blundered. Perhaps he has, but I notice he usually blunders forward.

If we did all the things we are capable of doing, we would literally astound ourselves.

First be sure a thing is wanted or needed, then go ahead.

I know of over 3,000 ways [that] a light bulb does not work.

I have not failed. I have successfully discovered 1200 ideas that don't work.

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.