"Learning from success merely increases our inertia: to increase our capacity, our ability, our reach, our strength - only failure will do that. We can only fail if we try then what we are unsure of, and to do so is prelude to the leaping of that hurdle which defeats inertia alone. Every step, every stride, every launch is a success of the highest order, for the race we run is one of relay. We must never lose it."