The man who can drive himself further once the effort gets painful is the man who will win.
Roger Bannister
It is defeat that turns bone to flint; it is defeat that turns gristle to muscle; it is defeat that makes men invincible.
Henry Ward Beecher
All the best things that I did at Apple came from (a) not having money and (b) not having done it before, ever.
Steve Wozniak, Apple