This study is part of the spirit of the days were organized in Ascona, and is the result of contributions from Hugo Rahner between 1940 and 1945 to those famous gatherings of thinkers highly influential scholars engaged in the desire to foster the spiritual dimension of human in the modern world. This key work is reflected in the original symbolic worldview Hugo Rahner, which came to be characterized as a "universal culminating in Christ": a vision of the world and all its manifestations are conceived as symbols of the spirit. Universal truths that the ideals of ancient Greece in all its richness in symbols and images overlaid on their enduring myths reveal its true meaning only when viewed in the light of the keys to Christianity. In Rahner's words: "Under the votive images of Greek mythology was intended to indicate the upward path that leads to the heights of the Christian transfiguration." Rahner's study is thus a sort of "ancient Christian psychagogy" hermeneutic features a truly remarkable work, which, along with the poetic power of language, make this book a classic essential. As such it has been rediscovered in recent years and some people consider it, along with other theological writings of Hugo Rahner, as a badge of spiritual integration of European and Western theology in these times determined by the encounter of Christianity with other major world religions. theologians, philosophers, the general public interested in mythology, science, culture, religion.