Maximiliano Herraiz García OCD, Carmelite saints founders specialist and writer career and international recognition, Spanish by birth lived for ten years in Africa, and has traveled five continents evangelizing through the Carmelite mystics in dialogue with universal mysticism, now convinced of experiential dimension of faith. In this interview he reflects on the relationship between mystical experience and language, linking mission and mystical literature. As part of the preparation for the Fifth Centenary of the Birth of Teresa of Avila, highlights the urgency of considering his theology of friendship and ascetic mysticism as roads for the current century Christianity.