Chris Hadfield
Nothing focuses your mind quite like flying a jet. That's one reason NASA requires that astronauts fly T-38s: it forces us to concentrate and prioritize in some of the same ways we need to in a rocket ship.
More quotes and aphorisms
The real duty of man is not to extend his power...Everything has beauty...The greatest magnifying glasses in the world...The past, like the future, is indefinite...A great man is a torch in the darkness...The achiever is the only individual who is truly alive...