In every step and stage of its progress, the maxim "Excelsior" should be the aim of the youthful mind; and the hand of the teacher should be extended, not to lift it up, but only to assist it in its endeavors to raise itself. All of the labor must not be done by the teacher, nor by books. They are of use only in exciting the mind to act for itself. They may, indeed, act as pioneers, but the pupil must not be carried in their arms; he must perform the march himself. And herein lies the great difficulty of the teacher's task: on the one hand, to avoid the evil of leaving too little to be done by the scholar; and, on the other, to be careful that he be not required to do too much. Real difficulties should be lightened, but some labor should be permitted to remain. To make such labor attractive, and easily endured without discouragement, is the task which best shows the tact and skill of the teacher. If this volume be found useful in aiding the teacher, by doing all that should be required from the book, the design of the author will be accomplished.