This edition of the papyrus containing Didymos' comments on some of Demosthenes' speeches aims to provide the student with a new reading of the text, a facing translation that is carefully edited for those who cannot use the Greek to show what is extant and what is restored, and a detailed commentary that considers all issues related to the restoration of the text and to its historical content. All Greek is translated into English so that the discussion is fully accessible. In addition, throughout the introduction and commentary an attempt is made to arrive at a balanced appraisal of Didymos' position in the history of scholarship.