Learned and voluminous works, of course, have brought together and compared the representations men have fashioned for themselves of the Beyond—in other words, of the kind of life in store for them after death. Sometimes the authors of such compilations have tried to classify these imaginary worlds and discover by what secret laws the after-universes where the dead live were designed, and in what spaces, both near and irremediably separate, they were located. It is not always easy to reach them, even if it is inevitable. As for returning, it is impossible, aside from a few legendary exceptions: a goddess, Ishtar; a fabled hero, Orpheus; a man who was raised from the dead but of whom nothing further is known, Lazarus.