God has strewn our paths with wonders and we certainly should not go through life with our eyes shut

There are two critical points in every aerial flight-its beginning and its end.

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

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

Man is the result of slow growth; that is why he occupies the position he does in animal life. What does a pup amount to that has gained its growth in a few days or weeks, beside a man who only attains it in as many years.

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

Watson, ... if I can get a mechanism which will make a current of electricity vary in its intensity, as the air varies in density when a sound is passing through it, I can telegraph any sound, even the sound of speech.