"Institutions can never conserve without betraying the movements from which they proceed. The institution is static, whereas its parent movement has been dynamic; it confines men within its limits, while the movement had liberated them from the bondage of institutions; it looks to the past, [although] the movement had pointed forward. Though in content the institution resembles the dynamic epoch whence it proceeded, in spirit it is like the [state] before the revolution. So the Christian church, after the early period, often seemed more closely related in attitude to the Jewish synagogue and the Roman state than to the age of Christ and his apostles; its creed was often more like a system of philosophy than like the living gospel."
-- H. Richard Niebuhr (1894-1962), The Kingdom of God in America