Genius is not inspired. Inspiration is perspiration.

For faith, as well intentioned as it may be, must be built on facts, not fiction - faith in fiction is a damnable false hope.

I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

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.

Somewhere between the ages of eleven and fifteen, the average child begins to suffer from an atrophy, the paralysis of curiosity and the suspension of the power to observe. The trouble, I should judge, to lie with the schools.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

It is a terrible situation when the Government, to insure the National Wealth, must go in debt and submit to ruinous interest charges, at the hands of men, who control the fictitious value of gold. Interest is the invention of Satan.