- Listenly
- Public Library
- Project Gutenberg
- Celsus (Platonic philosopher), active 180
Celsus (Platonic philosopher), active 180 — Audiobooks
The writings of Origen, Vol. 1 (of 2)
by Origen
The writings of Origen, Vol. 2 (of 2)
by Origen
A Dissertation on the Books of Origen against Celsus
by Francis Cunningham