Hitherto acceptable norms of human conduct do not apply. If the United States is to survive, long-standing American concepts of 'fair play' must be reconsidered. We must develop effective espionage and counterespionage services and must learn to subvert, sabotage and destroy our enemies by more clever, more sophisticated, and more effective methods than those used against us. It may become necessary that the American people be made acquainted with, understand and support this fundamentally repugnant philosophy.

Germany may have recovered a flying saucer as early as 1939

If we should have to fight, we should be prepared to do so from the neck up instead of from the neck down.

The first lesson is that you can't lose a war if you have command of the air, and you can't win a war if you haven't.

Nothing is as strong as the heart of a volunteer.

The function and Navy in any future war will be to support the dominant air arm.

I am not a very timid type. It's very important to some people, but not to me. I have a simple philosophy: worry about those things you can fix. It you can't fix it, don't worry about it; accept it and do the best you can.