precision and circumspectness, so that we may be enabled to fulfill the commandment more perfectly. It is implied in what I have said that the teacher should not treat of moral problems as if he were dealing with problems in arithmetic. The best thing he can do for his pupils--better than any particular lesson he can teach--will be to communicate to them the spirit of moral earnestness. And this spirit he can not communicate unless he be full of it himself. The teacher should consecrate himself to his task; he should be penetrated by a sense of the lofty character of the subject which he teaches. Even a certain attention to externals is not superfluous. The lessons, in the case of the younger children, may be accompanied by song; the room in which the classes meet may be hung with appropriate pictures, and especially is it desirable that the faces of great and good men and women shall look down upon the pupils from the walls. The instruction should be given by word of mouth; for the right text-books do not yet exist, and even the best books must always act as a bar to check that flow of moral influence which should come from the teacher to quicken the class. To make sure that the pupils understand what they have been taught, they should be required from time to time to reproduce the subject matter of the lessons in their own language, and using their own illustrations, in the form of essays. And now, after this general introduction, let us take up the lessons on the duties in their proper order. What is the proper order? This question, you will remember, was discussed in the lecture on the classification of duties. It was there stated that the life of man from childhood upward, may be divided into periods, that each period has its special duties, and that there is in each some one central duty around which the others may be grouped. During the school age the paramount duty of the pupil is to study. We shall therefore begin with the duties which are connected with the pursuit of knowledge. We shall then take up the duties which relate to the physical life and the feelings; next, the duties which arise in the family; after that the duties which we owe to all men; and lastly we will consider in an elementary way the civic duties.