"If you aren't living on the edge, you're taking up too much space. It has nothing to do with thrill-seeking. It's about making the most of every moment, about stretching your own boundaries, about being willing to learn constantly and putting yourself in situations where learning is possible - sometimes even critical to your survival. Being out on the edge, with everything at risk, is where you learn - and grow - the most."
Whittaker, first American to summit Mt. Everest