Among most animals below man the babies are soon able to leave mother and shift for themselves, but in the case of human beings the baby is helpless for a much longer time. So, even among the lowest savages, it was necessary for father and mother to keep together and look after their children. Thus grew up family life; and out of the family the tribe; and out of many tribes living together and closely related, grew first small and then larger nations. Yet, always at the beginning, it was the mother, more than the father, who looked after the children and taught them, so bringing before the world the idea of doing things, not for one's self alone but for others. From this came the mutual giving and helping which made national life possible, and that is making this a better and better world to live in. IV. The Great Unseen So it is very plain not only that the end, the purpose of all this machinery and march of things that we have been going through since the beginning of Chapter I, is to make life better, more beautiful both in form and character, but to show that "all nature is on the side of those who try to rise."[59] It is plain also that this end must have been foreseen and intended from the beginning; for, from the very start each change in the world and in life was a preparation for another and a greater change. The change from rock to soil made plant life possible; the growth of plants made animal life possible, and so on up through the long succession of changes in this tree of life by which all things are related and which gave us the infinite variety of good things we already have--fruit, homes, churches, schools, art galleries, books, railroads and steamships that make the whole world neighbors; the telegraph, the newspapers, and the magazines that carry thought and knowledge and plans for the common good so fast and far that already it is as if a whole nation with its millions had a heart and brain in common. [Footnote 59: Drummond: "The Ascent of Man."] Man himself, you see, has become one of the great forces of nature in the evolution of nature, in the blossoming out and fruit-bearing of things. But now notice this: Back of all that man does and all that the rest of nature does is the great controlling force called Mind; and this Mind is invisible. If I should say of some great man that he had a powerful mind you would know just what I meant; but if anybody should ask "What did his mind _look_ like?" you would think that was an odd question, wouldn't you? [Illustration: _From the painting by Burne-Jones_ THE FIRST DAY OF CREATION ] THE MYSTERIOUS PRINCESS HIDDEN IN THE BUD