Franz Dunzl gives an account of the formation of the doctrine of the Trinity in a narrative based on contemporary sources: as he remarks in the preface, he wants to describe the human struggle over the truth of the Christian image of God and as far as possible let the early Christians speak for themselves. His main concern is to describe the dynamic of the disputes over the theology of the Trinity in a vivid way which is easy to follow, pointing out the foundations of the doctrine and the decisive shifts in its development. He tries to see the often bitter discussion not as a barren dispute...