We all desire to retain a sense of connection to the past. It is part of human nature. Too sudden a break with tradition can produce something very much like insanity; in individuals we call this a broken mind, and in nations we call it revolution. And both of these reactions are destructive. And at the same time, we need to feel we can project ourselves into the future, somehow. We want to escape the limitations of this frail physical life, with its miserly duration and inconstant rewards.