Nicene and Post-Nicene Fathers: Series II/Volume III/Lives of Illustrious Men/Gennadius/Caelestius, follower of Pelagius

before he joined Pelagius, while yet a very young man, wrote to his 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.