For the distinction of the Caenobites and the Hermits, especially in Egypt, see Jerom (tom. i. p. 45, ad Rusticum [Ep. 125, tom. i. p. 932, ed. Vallars.]), the first Dialogue of Sulpicius Severus, Rufinus (c. 22, in Vit. Patrum, l. ii. p. 478), Palladius (c. 7, 69, in Vit. Patrum, l. viii. p. 712, 758), and, above all, the eighteenth and nineteenth Collations of Cassian. These writers, who compare the common and solitary life, reveal the abuse and danger of the latter.