every Christian heart. And it was a task of great difficulty. For what Tertullian had to do was to establish the true and complete deity of Jesus, and at the same time the reality of His distinctness as the Logos from the fontal-deity, without creating two Gods. This is, on the face of it, precisely the problem of the Trinity. And so far as Tertullian succeeded in it, he must be recognized as the father of the Church doctrine of the Trinity. Of course Tertullian was not completely successful in so