The shorter works of Jacques Maritain have been so enthusiastically received that this, his first long work, should be even more welcome. Undoubtedly one of the greatest living philosophers this book will have a wide field. Philosophers and theologians cannot miss it and to add to its importance it bears the imprimatur so that Catholics as well as Protestants will consider it required reading. While it is not easy reading it is amazing how clearly the author cuts his way through the maze of problems and subjects that face him. Equally at home in the field of science of theology, in physics or mysticism, mathematics or philosophy, we find ourselves following our surefooted guide with an amazing but delightful sense of achievement. Tell your customers honestly this is a book to own, read, reread and study, not to be digested in one reading from a library. It is more than $6.00's worth. It contains a lifetime of knowledge.