Lecture Five
In any case, teaching about minerals should, in practice, begin only between the eleventh and twelfth year, and history should also be treated only pictorially before then. During the eleventh or twelfth year, you can begin to consider cause and effect by connecting the various historical eras, and thus present children with a comprehensive survey. You will be able to observe the correctness of this method in this way: If you present causality in describing historical processes too soon, you will find that children do not listen; but if you do it at the proper time, they meet you with inner joy and eager participation.
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