RARE FIFTH REVISED AND ENLARGED EDITION of `The Kitab al Khazari` (commonly called the `Book of Kuzari`) by the medieval Spanish Jewish philosopher and poet Rabbi Yehuda Halevi (c.1075-1141), with translation and commentary by David Cassel (1818-1893), the renowned German historian and Jewish theologian. 225x150mm. IV+440 pages. Black board Hardcover with dark-blue gilt spine. Cover slightly curved. Cover and spine worn. Cover corners/edges and spine edges bumped and peeling/tattered. Spine hinges cracked, tattered and glued. Binding slightly visible on inner cover. Pen marks near text on pages 55-56, 59, 61, 65, 70. Pages 67-69 edge slightly torn - NO damage to text. Binding losse and visible between pages 80-81. Binding broken into two/detached between pages 288-289. Pages yellowing. [SUMMARY]: Though in need of some external restoration, the inside of the book is preserved very well; accordingly this extremely rare fifth German edition of the classic Jewish medieval philosophical treatise is still in good reading condition.