Every new book enters the arena about to die. The friendly verdict but deters fate; it does not avert it. The lesser criticism of letters must be done anew for every crop of readers, and in fifteen or twenty years most essays are left behind. The procession of novels passes almost as rapidly. Few are read for thirty years, no English novels have held a popular place for past half a century, and a decade before the centenary of Waverly it begins to be whispered that Scott is no longer read by the young. Every generation must have its own translations of the classics, or reprints of those which have been forgotten. Morals, philosophy, and religion must be rewritten for it. Even histories, which linger a little longer on the stage than all the rest, yield to inexorable change. It is barely a century since Gibbon launched his mighty fleet, freighted with the fall of empire. It has long ridden the seas, but I think we are all well aware that its masts are already low on the horizon. No one author, no one work, can longer satisfy the world for the story of ten centuries of the race. For most of us these changes do not exist. Unconsciously we go on down the stream with the favorites of our youth and forget that both are growing old together. If literature is to be taught as it is, and not as it seems, to take one pregnant illustration, true of all studies, teacher and taught must have instant and vital access to that great body of books to which in every subject a text-book is but a rude and makeshift guide. The present can only be understood by the past, and both are needed to prophesy of the future. When this library has been enlarged to the utmost bounds of our anticipation, it will still have its limits to the specialists--joints in its armor of learning. Even at the British Museum I was told and discovered that no man is long at work without wanting some book with which it is unprovided. But if teaching requires this great array, much more does the wider work of the college professor. To look upon him as set only to teach, to hear recitations, is as narrow and barren a view of his work as to think of the farmer as only occupied in feeding his calves. If a university is in the highest sense to be a teaching body, it must cultivate knowledge as well as pupils. Its professors must do more than harvest the learning and teach the discoveries of other discoverers. They must produce and discover. The spirit of genius bloweth where it listeth, but those books of use which play their part in giving each generation its critical standards, its histories, and the results of research are born only in full libraries. If a university is deficient in them, the lack is apt to be in that laboratory of learning, its library. Unless a university is producing these, it is teaching only its matriculates when it ought to be teaching the public.