In the principle we enounced at the opening of this chapter, that the earth is the school-house of man—its highest function being to aid in his intellectual and moral training, and furnish the conditions in which he may fulfill his noble destiny—we can recognize at once the reason and the law of this remarkable progression. And as no single continent furnishes all the conditions necessary to the complete development of man, and each of the three northern continents, by virtue of its structure and climate and physical conditions, has a special function to fulfill in the education of mankind, so God, in his providence, has led the human family from east to west, over the continents of the Temperate Zone, in order to secure the education, the moral advancement, and the final perfection of our race.

The education of the race has, no doubt, proceeded very much in the same manner as the education of the individual. The general law observable in the development of one human mind may be traced in the development of humanity as a whole. That which takes place on the limited field of individual consciousness may also be found upon the larger field of universal consciousness, which is the theatre of history; and as one epoch succeeds another in the progress of the individual, so must it be in the progress of nations. What, then, are the clear and obvious stages in the development of the human mind? Do we not clearly recognize the following order?

1. The period of submission to absolute authority. This is the first condition of infancy. The child is controlled absolutely by the will of the parent. It is almost passive amid surrounding conditions, and parental authority is its only law of movement and action.

2. The discipline of the conscience. This is the era of childhood. The ideas of the right and the good are developed in the mind. An internal law of duty begins to reveal itself. The child begins to discriminate between what he ought and ought not to do. And in the education of the child the object of a wise and virtuous parent is to strengthen this tendency by urging him to act upon these ideas.

3. The development of personal liberty—that is, of independent thought and self-originated action. This is the period of youth. The youth passes from the control of his parents and teachers, and begins to think and act for himself.

4. The training and discipline of the will under social law—that is, the voluntary obedience to laws imposed by society, submission to regulations imposed for the public good. This is the period of manhood. The young man passes into society, he becomes a member of the body politic, and freely acts, not simply as an individual, but as a member of a corporation and of a state.

5. The development of active philanthropy. The man advances beyond the claims of social law, and acts from the promptings of love and good-will toward all men. Passing through all the varied stages in the progressive development of human character, and retaining the results of each, he becomes the perfect man.

And now it will be promptly recognized that this has been the order of progress in humanity as a whole—that is, the progress of history and of civilization. The first corresponds with Oriental, the second with Hebrew, the third with Greek, the fourth with Roman, and the last with Christian civilization.

It will also be observed that each epoch in the development of the individual has demanded new conditions, and has taken place in a new sphere. The first stage in the development of individual character is infoldment in the arms of the parent. He is still held, as it were, within the circle of maternal life. He is bewildered by the vastness and variety of external nature, and he sinks back into his mother's arms. The second sphere is in the bosom of the family and amid the scenes of domestic life, where he recognizes relations and becomes conscious of duties. The third is in the school and the outer world, where thought awakens, and, enjoying more freedom of movement, he becomes more conscious of his personal liberty. The fourth is in society, the state, the arena of political life, where his movements must be regulated by law; and the pursuit of his own pleasure or aggrandizement must not interfere with the rights of his fellow-man. The fifth and last is in the church, the home of religious life, where he is called to ascend from the region of mere law to that of holy love. So also each epoch in the development of humanity has had its separate sphere and its new conditions, first in Asia proper, next in Palestine, on the borders of the Mediterranean Sea, then on the peninsula of Greece, then in Italy, and lastly in Continental Europe, England, and America.