A collection of key texts from early Carthusian writing in the IIth and 12th Centuries. St Bruno: Letter to his Carthusian sons at the Chartreuse, The Letter to Raoul le Verd, Profession of Faith. Bl. Guigo, fifth prior of the Grande Chartreuse: Letter on the solitary life. Guigo II, ninth prior of the Grande Chartreuse: The scale of the cloister. Other books of classic Carthusian spirituality published by Gracewing include The Call of Silent Love, Interior Prayer, The Prayer of Love and Silence, They Speak by Silences, The Way of Silent Love and The Wound of Love.