Washington is no place in which to carry out inventions

Don't keep forever on the public road, going only where others have gone and following one after the other like a flock of sheep. Leave the beaten track occasionally and dive into the woods.

You cannot force ideas. Successful ideas are the result of slow growth. Ideas do not reach perfection in a day, no matter how much study is put upon them.

The nation that secures control of the air will ultimately control the world.

The only difference between success and failure is the ability to take action.

Great discoveries and improvements invariably involve the cooperation of many minds.

Leave the beaten track behind occasionally and dive into the woods. Every time you do you will be certain to find something you have never seen before.