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

The achievement of one goal should be the starting point of another.

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

Before anything else, preparation is the key to success.

Concentrate all your thoughts upon the work at hand. The sun’s rays do not burn until brought to a focus.

A man, as a general rule, owes very little to what he is born with— a man is what he makes of himself.

If a man is not bound down, he is sure to succeed.

Sometimes we stare so long at a door that is closing that we see too late the one that is open.

When one door closes, another opens but we often look so long and regretfully upon the closed door that we do not see the one that has opened for us.

Man is most nearly himself when he achieves the seriousness of a child at play.