Ever the pugnacious contrarian, [Christopher] Hitchens is witty, combative, sarcastic, intelligent and generally outrageous. He loves to rip out the shirttails of the pious (whatever their religion) and set fire to them.
[Richard] Dawkins is a somewhat different animal. He was raised as a rather conventional Anglican, but abandoned his faith at 16, when he was persuaded that evolution, and not divine providence, accounted for the rich diversity of the natural world. If purely natural processes provided satisfying explanations for the world as it is, then belief in God became for Dawkins a redundant luxury.