Founder of the Discalced Carmelites, Doctor of Mystcal Theology and arguably Spain's Greatest Lyric Poet. But beware..."His writings on the soul united with God in prayer reveal the most profound mystical expressions, experiences and insights ever imagined. They are for those precise reasons often misunderstood or misinterpreted unless one has a wise spiritual director who is experienced in contemplative prayer and well versed in mystical and ascetical theology." ~ Doctors of the Catholic Church.com