Note 543 — Part I (continued 5)
Reading edition
Ibid, p. 101. This was one of the earliest heresies of the Christian era refuted by Origen: "Moreover, he [Celsus] frequently calls the Christian doctrine a secret system, we must refute him on this point ... to speak of the Christian doctrine as a secret system is altogether absurd."--Origen, Contra Celsum, in The Ante-Nicene Christian Library, p. 403 (1869).