Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.
The fundamental magic of flying is a miracle that has nothing to do with any of its practical purposes - purposes of speed, accessibility and convenience - and will not change as they change.
There are two kinds of people: those who are always well and those who are always sick. Most of the evils of the world come from the first sort and most of the achievements from the second.