The culture of fin siecle Vienna continues to fascinate and has been examined at length. There are indeed massive studies of Freud, Mahler, Loos, Klimt, and many other notables from that era. But these studies often ignore the religious dimension of Viennese modernist culture, implying -- if not arguing outright -- that "modernism" and "religion" are contrary, even hostile, categories. Taking a different tack, Robert Weldon Whalen in Sacred Spring documents the important thesis that Viennese modernism, far from being secular, was in fact a deeply religious movement. In vivid language Whalen...