Teresa (1515-1582), a Spanish mystic, is considered to be one of the most profound spiritual teachers in the history of Christianity. The Interior Castle is Teresa's spiritual masterpiece.

This 16th-century Spanish mystic is considered one of the most profound spiritual teachers in the history of Christianity. Father Kieran Kavanaugh, the editor of this volume, says in his introduction, 'The Interior Castle has come to be regarded as Teresa's best synthesis...'