Rene Dumal, author of Mountain Analogue: "You have to come down from your summit, so why climb in the first place? Just this: What is above knows what is below. But what is below does not know what is above. One climbs, one sees, and one descends. There is an art of conducting oneself in the lower regions by what one has learned higher up. When one can no longer see, one can at least know." know."