“The real history of Christianity is the history of a great spiritual tradition. The only true apostolical succession is the lives of the saints. Clement of Alexandria compared the Church to a great river, receiving affluents from all sides. The great river sometimes flows impetuously through a narrow channel; sometimes it spreads like a flood; sometimes it divides into several streams; sometimes, for a time, it seems to have been driven underground. But the Holy Spirit has never left himself without witness; and if we will put aside a great deal of what passes for Church history, and is really a rather unedifying branch of secular history, and follow the course of the religion of the Spirit and the Church of the Spirit, we shall judge very differently of the relative importance of events from those who merely follow the fortunes of institutionalism.”
-W. R. Inge, Things New and Old (1933), p. 57. As quoted on page 161 of F.F. Bruce, The Spreading Flame: The Rise and Progress of Christianity from its First Beginnings to the Conversion of the English (Paternoster, Wipf & Stock), 1958.