Cell of Self-Knowledge is a collection of seven 14th century works written by the most prominent English mystics. This collection is based on the 16th century publication of the seven works under the editing of a certain Henry Pepwell. A Very Devout Treatise of the Mights and Virtues of Man's Soul Divers Doctrines Devout and Fruitful, Taken Out of the Life of That Glorious Virgin and Spouse of Our Lord, Saint Katherin of Seenes A Short Treatise of Contemplation Taught by Our Lord Jesu Christ, or Taken Out of the Book of Margery Kempe, Ancress of Lynn A Devout Treatise Compiled by Master Walter Hylton of the Song of Angels A Devout Treatise Called the Epistle of Prayer A Very Necessary Epistle of Discretion in Stirrings of the Soul A Devout Treatise of Discerning of Spirits, Very Necessary for Ghostly Livers