This work contains material to supplement volume one of the author's "Loeb Euripides". It consists of two parts: Testimonia Vitae et Artis Selecta and Textual Discussions. The Testimonia, ancient notes about the life of Euripides and his career as a tragic poet, are printed together, with a facing English translation. The Loeb introduction examines this material critically. Equipped with this body of evidence, students of Greek tragedy and of ancient biography will be able to assess for themselves the reliability of the biographical tradition, in which, the author argues, too much confidence has been placed by interpreters of plays. The Textual Discussions explain places in the plays of volume one, "Cyclops", "Alcestis" and "Medea", where the text adopted by the editor calls for comment.