Bernard Bergonzi has written an absorbing and fascinating biography of Thomas Arnold the Younger (1824-1900), son of the celebrated headmaster of Rugby and younger brother of Matthew, father of Mrs. Humphrey Ward, and grandfather of Aldous Huxley. A scholar, teacher, and self-styled "wanderer," Arnold's path in life took him, after a brilliant start at Oxford, to colonial New Zealand, to Tasmania, to Dublin, back to Oxford, and once more to Dublin,...