Nicene and Post-Nicene Fathers, Ser. II, Vol. III:
Jerome and Gennadius. Lives of Illustrious Men.: Caelestius, follower of Pelagius.

Chapter XLV.

Caelestius, 2651 before he joined Pelagius, while yet a very young man, wrote to his p. 394 parents three epistles On monastic life, written as short books, and containing moral maxims suited to every one who is seeking God, containing no trace of the fault which afterwards appeared but wholly devoted to the encouragement of virtue.

Footnotes

Heretic 412–417.