Challenge is the core and the mainspring of all human activity. If there's an ocean, we cross it; if there's a disease, we cure it; if there's a wrong, we right it; if there's a record, we break it; and finally, if there's a mountain, we climb it.

It is the ultimate wisdom of the mountains that a man is never more a man than when he is striving for what is beyond his grasp.

We are so clothed in rationalization and dissemblance that we can recognize but dimly the deep primal impulses that motivate us.

Challenge is the core and the mainspring of all human activity. If there's an ocean, we cross it; if there's a disease, we cure it; if there's a wrong, we right it; if there's a record, we break it; and finally, if there's a mountain, we climb it.