Alan of Lille
poet, theologian, and preacher. He probably studied and taught at Paris c.1150–c.1185. Later he moved to the South of France and towards the end of his life entered the abbey of Cîteaux. His early theological writings include the incomplete Summa Quoniam homines, the Regulae caelestis iuris, in which he tries to state theological truths in a series of rules or axioms, and the allegorical poem Anticlaudianus (1182–3). He later compiled a dictionary of Biblical terms with literal, moral, and allegorical interpretations, an ars praedicandi, to which was attached a set of 27 model sermons, and a Liber poenitentialis, the earliest medieval manual for confessors.