No doubt it is difficult to think of vast knowledge of life in connection with a child, but we must remember that as a rule the grown-ups underestimate the capacity of a child's mind, which is very often more eager to understand and more capable of comprehension than that of a grown-up person. Although you cannot start with a deep subject at the beginning of a child's education, you can always keep before you the large design you have in view and wish to reach.