The substitution of the internal combustion engine for the horse marked a very gloomy milestone in the progress of mankind.

Air power can either paralyze the enemy's military action or compel him to devote to the defense of his bases and communications a share of his straitened resources far greater that what we need in the attack.

You may have to fight when there is no hope of victory, because it is better to perish than live as slaves.

Never give up on something that you can't go a day without thinking about.

To build may have to be the slow and laborious task of years. To destroy can be the thoughtless act of a single day.

We contend that for a nation to try to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle.

Let our advance worrying become advance thinking and planning.