The hero is the child of his times, in that his milieu furnishes him with motives and means, and yet the hero seizes the time and shapes it as he will. And he remains an enigma to his contemporaries and to the future. Nowhere is this better illustrated than in the strange story of the three whose discoveries and achievements determined the whole course of history. The driving idealism and bold military genius of Dyann Korlas; the mighty wisdom, profound and benign, of Urushkidan; above all, perh