 As a result of his condemnation, many of his works were not copied during the Middle Ages and were subsequently lost.Of his lost compositions we can gather a partial list from the citations of ancient authors which includes "On Dogmas, On The Death of Young Children, Against the Arians, First Word," and others.One of Didymus's lost works is a commentary on Origen's "First Principles" which, according to Jerome, tried to interpret an orthodox understanding of the Trinity from Origen's theology.