“Art that bewilders one generation becomes accessible to the next; or so it would seem.” The explanation for this is partly “a natural process: the true artist is always ahead of the game and the public takes time to catch up. … But there is more to it than the depth-charge effect of great drama. Along with the erosion of the old certainties and the belief that life is explicable in religious or philosophical terms has gone a total revolution in the form of drama.”