Most young people enter life with great ambitions. But again and again they undergo such experiences as remind them of their helplessness. Disease, accidents, losses, and disadvantages—all these repeatedly remind them that their lot in life is one of unfulfilled desires. Then they see that, however great one’s material success, one inevitably dies within the span of 100 years, leaving all one’s wealth behind. Such bitter reflection shows that all the sweet dreams of childhood and youth stemmed from ignorance. For it is impossible to have complete fulfillment in this present imperfect world.