" I'm convinced that a lot of people run ultramarathons for the same reason they take mood-altering drugs. I don't mean to minimize the gifts of friendship, achievement, and closeness to nature that I've received in my running carer. But the longer and farther I ran, the more I realized that what I was often chasing was a state of mind - a place where worries that seemed monumental melted away, where the beauty and timelessness of the universe, of the present moment, came into sharp focus. "
― Scott Jurek , Eat and Run: My Unlikely Journey to Ultramarathon Greatness