spiritual writer. He was a noted preacher at Constantinople. In 382 he set out for the Nitrian desert, where he spent the rest of his life. He worked out an account of the progress of the monk (or hermit) through apatheia to contemplation. His works include his ‘Monachos’ or ‘Practicos’ (on the spiritual life of the monk); ‘Gnostic Chapters’ (a more advanced treatment of the same subject), prefaced by a brief work called ‘The Gnostic’; a treatise ‘On Prayer’ (at one time attributed to Nilus of Ancyra); and scholia on various biblical Books only discovered in modern times.