Love is not only a moral phenomenon. Rather, the love of one's neighbour is "so radical and absolute" that it "overcomes" the meaning of subjectivity as "the possession of oneself" and sees it instead as an openness "to an absolute origin which is not ourselves". One becomes a subject in the ethical relationship with one's neighbour. Theology is primarily ethical in intent, "valuing love above all else". It is this relation between theology and ethics which we want to pursue in this book, taking as our guides Karl Rahner and Emmanuel Levinas.