The Classics of Western Spirituality is a 26-book series with 26 primary works first released in 357 with contributions by Athanasius of Alexandria, Gregory of Nyssa, Everett Ferguson, Abraham J. Malherbe, Pseudo-Dionysius the Areopagite, John Climacus, Hildegard of Bingen, Ibn Arabi, Gregory Palamas, Catherine of Siena, Jakob Böhme, Boniface Ramsey, John Cassian, Bonaventure, Abraham Isaac Kook, Origen, Hadewijch, Francis of Assisi, Clare of Assisi, Jan van Ruusbroec, Joseph Dan, Moshe Idel, Bernard of Clairvaux, Ewert H. Cousins, Jean Leclercq, John of the Cross, Anonymous, Ignatius of Loyola, and Nicholas of Cusa.