As an editor, I confess that I view all this effusion with some distrust. One plain fact stands high and dry above the discussion: books are being published daily, and some one must tell the busy and none too discriminating public what they are worth--not to mention the librarians who are so engaged in making out triple cards and bibliographies and fitting titles to vague recollections that they have no time left to read. Furthermore, if reviewing is a chore at worst, and at best a desire to gratify a craving for the unappeasable, editing reviews is still more chorelike, and seeking the unobtainable--a good review for every good book--is quite as soul-exhausting as the creative instinct. And, again as an editor, the perfect marriage of well attuned minds is well enough as an ideal, but as a practicable achievement I find myself more often drawn toward what I should call the liaison function of a reviewer. The desire to be useful (since we have excluded the desire to make money as a major motive) is, I believe, an impulse which very often moves the reviewer. The instinct to teach, to reform, to explain, to improve lies close to the heart of nine out of ten of us. It is commoner than the creative instinct. When it combines with it, one gets a potential reviewer. The reviewer as a liaison officer is a homelier description than soul affinity or intellectual mate, but it is quite as honorable. Books (to the editor) represent, each one of them, so much experience, so much thought, so much imagination differently compounded in a story, poem, tractate on science, history, or play. Each is a man's most luminous self in words, ready for others. Who wants it? Who can make use of it? Who will be dulled by it? Who exalted? It is the reviewer's task to say. He grasps the book, estimates it, calculates its audience. Then he makes the liaison. He explains, he interprets, and in so doing necessarily criticizes, abstracts, appreciates. The service is inestimable, when properly rendered. It is essential for that growing literature of knowledge which science and the work of specialists in all fields have given us. Few readers can face alone and unaided a shelf of books on radio-activity, evolution, psychology, or sociology with any hope of selecting without guidance the best, or with any assurance that they dare reject as worthless what they do not understand. The house of the interpreter has become the literary journal, and its usefulness will increase.