“If there’s no hope, no chance, not the smallest shred… then why are you still alive?”
Still not looking at him, Asmodean rubbed the side of his nose. “I once saw a man hanging from a cliff,” he said slowly. “The brink was crumbling under his fingers, and the only thing near enough to grasp was a tuft of grass, a few long blades with roots barely clinging to the rock. The only chance he had of climbing back up on the cliff. So he grabbed it.” His abrupt chuckle held no mirth. “He had to know it would pull free.”
— Robert Jordan, Wheel of Time (Book Five).