History has three periods: that before the law, that under the law, and that after the law. In this way we have a fully developed interpretation of history. We are in the last period, in the third stage, and it is sectarian heresy to say that another state must be expected. This heresy was expressed, of course, by the medieval sects, and from that point of view the fight between the revolutionary attempts of the sectarian movements and the conservatism of Augustine’s philosophy of history, becomes visible.

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