Prof. Andrew Torrance graduated from the University of Cambridge in 1968 and obtained a Ph.D. in 1971 from Imperial College, London. After work in France and England he joined the teaching staff at Trinity College, Dublin in 1980, where he became an Associate Professor, Head of Mechanical Engineering and Fellow of the College. In 2002 he was Visiting Professor at INSA de Lyon. Since his retirement in 2008 he has lived in France with his wife Marie-Christiane where he regularly translates from French to English for Orthodox Monasteries and engineering research. Dr Jean-Claude Larchet is one of the most notable living theologians and authors on Orthodox Christian Patristics. He holds a Ph.D in philosophy from the University of Nancy and a Ph.D. in theology from the University of Strasbourg. A teacher of philosophy for nearly thirty-five years, he is an author of over thirty-five books and countless articles whose work has been translated into nineteen languages. His magnum opus, Therapy of Spiritual Illness, and several other works have been translated into English to wide acclaim.