If the Wright brothers hadn't put their lives on the line, we would not be flying around the world these days. So we need pioneers.
We want to push mankind's boundaries out a little further.
Sometimes you have to go up really high to see how small you are.
Engage your life with enthusiasm; grasp your life aggressively and squeeze from it every drop of excitement, satisfaction, and joy.
The stratosphere is a hostile place.
The only limit is the one you set yourself.