" ... this ninety-five-year-old man came hiking twenty-five miles over the mountain. Know why he could do it? Because no one ever told him he couldn't. No one ever told him he oughta be off dying somewhere in an old age home. You live up to your own expectations... "

― Christopher McDougall , Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen