Marjorie Hope Nicolson's The Conway Letters is, simultaneously, a work of so many different kinds, and offers itself to so many distinct cultural and intellectual constituencies, that it is difficult to include them all, and impossible to assign them priority or precedence. It is first of all, though, a delightful and important book. It has been out of print for a great many years, the original edition of 1930 long ago sold out. So its reappearance in a new edition, with extensive revisions and additions by Sarah Hutton, is very much to be applauded and welcomed.