So we have here one of those tensions of which I spoke, in connection with Origen and other theologians, he tension between the ultimate theological, and the pre- ultimate, preliminary, educational point of view. And this is the tension you will experience in every hour of religious instruction – you always have these two elements: you will have it in counseling, you will have it in preaching. And the great struggle between Augustine and Pelagicus is perhaps the classical example of the problem in the Christian Church.

Paul Tillich, A History Of Christian Thought – Table of Contents