Dio Chrysostom (/ˈdiːoʊ ˈkrɪsəstəm, krɪˈsɒstəm/; Ancient Greek: Δίων Χρυσόστομος Dion Chrysostomos), Dio of Prusa or Cocceianus Dio (c. 40 – c. 115 AD), was a Greek orator, writer, philosopher and historian of the Roman Empire in the 1st century AD. Eighty of his Discourses (or Orations; Λόγοι) are extant, as well as a few letters, a mock essay Encomium on Hair, and a few other fragments. His sobriquet Chrysostom comes from the Greek chrysostomos, which literally means "golden-mouthed".