translated with an introduction by D. C. Lau. translated with an introduction by J. M. Cohen translated with an introduction by E. F. Watling. translated with an introduction by P.E. Charvet. translated with an introduction by H. N. P. Sloman translated with an introduction by T.S.Dorsch translated with an introduction by Tim Parks translated with an introduction by J.B. Leishman. translated with an introduction by Betty Radice. translated with an introduction by Ronald Wilks.