Santa teresa de Jesús (Ávila, 1515 - 1582) was a Carmelite nun. She entered the monastery leaving her parents' home secretly. She experienced periods of spiritual ecstasy through the use of the devotional book. Various friends suggested that her knowledge was diabolical, not divine, but her confessor reassured her of the divine inspiration of her thoughts. She was very active as a reformer of her order, and she founded many new convents.
Her most important writings are:
-Her Autobiography, The Life of Teresa of Jesus.
-The Way of Perfection.
-The Interior Castle, where she compared the soul with a castle.
-Relations, an extension of her autobiography.
Other smaller works are Concepts of Love and Exclamations. Besides, the Letters.