I've never made a mistake. I've only learned from experience.

Absorb ideas from every source.

People are not remembered by how few times they fail, but by how often they succeed. Every wrong step is another step forward

Until man duplicates a blade of grass, nature can laugh at his so called scientific knowledge.

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.

The endeavor to change universal power by selfish supplication I do not believe in.

Success is the result of hard work.