Evildoing has a threshold magnitude. Yes, a human being hesitates and bobs back and forth between good and evil all his life. He slips, falls back, clambers up, repents, things begin to darken again. But just so long as the threshold of evildoing is not crossed the possibility of returning remains, and he himself is still within reach of our help. But when, through the density of evil actions, the result of either their own extreme degree or the absoluteness of his power, he suddenly crosses that threshold, he has left humanity behind, and without, perhaps, the possibility of return.