El Castillo Interior or Las Moradas (trans.:The Interior Castle or The Mansions) was written by Saint Teresa of Ávila in 1577. After being ordered to write her autobiographical La Vida de la Santa Madre Teresa de Jesús (The Life of S. Teresa of Jesus), Teresa was hesitant to begin writing again on her views of the perfection found in internal prayer. In the hands of the Inquisition at that time, her Life was commonly believed to be the weight in the scale of whether to call her experiences heretical or not...

Essentially the sequel to The Life of St. Teresa, Teresa recounts the foundations of the Discalced Carmelite monasteries in Spain, both for men and women. This book tells of all the triumphs and troubles, and about the many people who helped her.(Introduction by Ann Boulais)