Giulio Douhet quotes:

Because of its independence of surface limitations and its superior speed the airplane is the offensive weapon par excellence.

I have a mathematical certainty that the future will confirm my assertion that aerial warfare will be the most important element in future wars, and that in consequence not only will the importance of the Independent Air Force rapidly increase, but the importance of the army and navy will decrease in proportion.

Тhe battlefield in the air will be the decisive one

The one effective method of defending one's own territory from an offensive by air is to destroy the enemy's air power with the greatest possible speed.

To conquer the command in the air means victory; to be beaten in the air means defeat.

To have command of the air means to be able to cut an enemy's army and navy off from their bases of operation and nullify their chances of winning the war.

Victory smiles upon those who anticipate the change in the character of war, not upon those who wait to adapt themselves after the changes occur.

Would not the sight of a single enemy airplane be enough to induce a formidable panic? Normal life would be unable to continue under the constant threat of death and imminent destruction.

You'll be scared! Sure you'll be scared. Who wouldn't fear having their head completely blown off.

In order to assure an adequate national defense, it is necessary - and sufficient - to be in a position in case of war to conquer the command of the air.