The present volume is the of a series of manuals which it is hoped to publish, giving selected articles from the dictionary in English. Its subject is obviously central both for theology and for religion in a disordered world. In the preface to his translation of the first part of Anders Nygren's famous book, Agape and Eros, A.G. Hebert says, 'There can be no right answer to the question'. What is Christianity? except by a clear view of the real meaning of the Agape of the New Testament, and its difference from pagan Eros.