What precisely does Hilary's so-called Opus Historicum aim at? His Preface provides the clue. An introduction to the present edition sketches the mutilated work's discovery, tabulates its contents, and discusses problems of dating and authenticity. The English translation, which faces the Latin text, adopts some alternative readings. The Preface is elucidated in itself, and by reference to the earlier In Matthaeum. Central issues are hope and love, confessors and martyrs, imperial favours and threats, the bishop and his inner freedom. The circumspect treatment of both the reader...