Known to us only through the Apophthegmata Patrum. It is likely that Apollo is the one to whom the HISTORIA MONACHORUM devotes a long notice in Chapter 8 (Festugièrer, 1971, pp. 46-71). If this identification is correct, Isaac would have been a monk at the end of the fourth century in the Thebaid, where he founded a large community of monks. The most prominent feature of his personality, according to the apothegm, appears to be his intense love for stillness.
- Cotelier, J. B., ed. Apophthegmata Patrum. PG 65. Festugière, A. J., ed. Historia Monachorum in Aegypto. Subsidia Hagiographica 63. Brussels, 1971.
- Guy, J. C. “Isaac le Thébain.” In Dictionnaire de spiritualité, Vol. 7, col. 2006. Paris, 1932-.