The book St Gregory Palamas as a Hagiorite covers the life, work and teaching of St Gregory Palamas and relates them to his identity as a monk of the Holy Mountain. Having first acquired personal knowledge of God, St Gregory Palamas subsequently became an unerring theologian, preacher and teacher of the theology of the uncreated Light, as well as of social justice through practicing Christ’s commandments. Involved in a major controversy with representatives of a legalistic, anti-hesychastic tradition originating from the West, St Gregory Palamas proved that prayer of the nous in the heart and the vision of the uncreated Light is part of the tradition of the Church. The teaching of St Gregory Palamas has made an inestimable contribution to Orthodoxy and is very relevant to our times.