"One might say that where Religion becomes artificial, it is reserved for Art to save the spirit of religion." With these words Richard Wagner began "Religion and Art" (1880), one of his most passionate essays. That passion made Wagner himself a central icon in the growing cult of art. Wagner felt that he lived in an age of spiritual crisis. "It can but rouse our apprehension, to see the progress of the art-of-war departing from the springs...