This reprint of the critical edition of Gregory of Nyssa’s collected works contains his De Vita Moysis, About the Life of Moses (first printed in 1964). Gregory of Nyssa, the famous Church Father and writer from the 4th century A.D., has had much influence on the thinking of his time with his philosophical and theological ideas, especially on the mystical tradition of the Eastern Churches. Again in the De Vita Moysis he shows his spiritual and intellectual sharpness. In two books we can find his characteristic way of thinking about life and death when he describes the mystical ascent of the soul in connection with Moses. Besides the complete text there is also an elaborate critical apparatus with many different readings of the same text.