The youth, having mastered the Hornbook (ABC's) and the rudiments of learning (reading, writing, and the beginnings of music and numbers), advances toward the temple of knowledge. Wisdom is about to place the key in the lock of the door of the temple. On the door is written the word _congruitas_, signifying Grammar. ("Gramaire first hath for to teche to speke upon congruite.") On the first and second floors of the temple he studies the Grammar of Donatus, and of Priscian, and at the first stage at the left on the third floor he studies the Logic of Aristotle, followed by the Rhetoric and Poetry of Tully, thus completing the _Trivium_. The Arithmetic of Boethius also appears on the third floor. On the fourth floor he completes the studies of the _Quadrivium_, taking in order the Music of Pythagoras, Euclid's Geometry, and Ptolemy's Astronomy. The student now advances to the study of Philosophy, studying successively Physics, Seneca's Morals, and the Theology (or Metaphysics) of Peter Lombard, the last being the goal toward which all has been directed.] Beyond these came Ethics or Metaphysics, and the greatest of all studies, Theology. This last represented the one professional study of the early middle-age period, and was the goal toward which all the preceding studies had tended. This mediaeval system of education is well summarized in the drawing given on the opposite page, taken from an illuminated picture inserted in a famous mediaeval manuscript, recopied at Basle, Switzerland, in 1508. Not all these studies were taught in every monastery or cathedral school. Many of the lesser monasteries and schools offered instruction chiefly in grammar, and only a little of the studies beyond. Others emphasized the Trivium, and taught perhaps only a little of the second group. Only a few taught the full range of mediaeval learning, and these were regarded as the great schools of the times (R. 71). Rhabanus Maurus (776-865), one of the greatest minds of the Middle Ages, Abbot for years at Fulda, and a mediaeval textbook writer of importance, has left us a good description of each of the Seven Liberal Arts studies as they were developed in his day, and their use in the Christian scheme of education (R. 74). I. THE TRIVIUM Of the three studies forming the _Trivium_, grammar always came first as the basal subject. No uniformity existed for the other two.