The “desert” is a state in which a person feels that he cannot use his former egoism, that has no nourishment. In the physical world, a person has a livelihood, a family, work; everything is okay, but inside he feels that his life is “dry” like a desert. The feeling of dryness brings a person to ask about the purpose of the whole “story.” Nature is very wise; it creates every detail with a wonderful understanding. But the purpose for which everything exists is hidden.