The book under review is the first Czech translation of Dionysius the Areopagite?s Mystical Theology and his Letters made by Martin Koudelka and Vojtěch Hladký. The review is focused on the specifities of the Dionysian language and the ways the translators managed to cope with them and briefly considers Martin Koudelka?s overall interpretation of Dionysius?s conception that underlies his Letters.