A writer as well as founder of his order, Saint Bruno composed commentaries on the Psalms and on the Epistles of Paul the Apostle. Two letters of his also remain, his profession of faith, and a short elegy on contempt for the world which shows that he cultivated poetry. St Bruno's "Commentaries" reveal that he knew a little Hebrew and Greek; he was familiar with the Church Fathers, especially Augustine of Hippo and Ambrose. "His style," said Dom Rivet, "is concise, clear, nervous and simple, and his Latin as good as could be expected of that century: it would be difficult to find a composition of this kind at once more solid and more luminous, more concise and more clear."