Excerpts from Michael Psellos, De omnifaria doctrina (De omnifaria doctrina, ed. L. G. Westerink, Utrecht 1948, chs 122-125, 127, 142-145, 147-150, 165) and from Simeon Seth, Quaestiones Naturales ( PG 122.785 chs 1-3, 5-7, 16, 26-29). Preceded by Περὶ αἰῶνος (ed. Westerink pp.102-104).
Nicetas Stethatos, Εἰς τὴν οὐράνιον ἱεραρχίαν, preceded by the correspondence with Nicetas the deacon and followed by the letter and verses of the monk Alexis. Opuscules et lettres, ed. J. Darrouzès ( SC 81), Paris 1961, pp.292-296, 300-364.