Suppose we are studying the course of the sun and the way to find our bearings, when all at once Emile… — Jean Jacques Rousseau

Suppose we are studying the course of the sun and the way to find our bearings, when all at once Emile interrupts me with the question, "What is the use of that?" what a fine lecture I might give, how many things I might take occasion to teach him in reply to his question, especially if there is any one there. I might speak of the advantages of travel, the value of commerce, the special products of different lands and the peculiar customs of different nations, the use of the calendar, the way to reckon the seasons for agriculture, the art of navigation, how to steer our course at sea, how to find our way without knowing exactly where we are. Politics, natural history, astronomy, even morals and international law are involved in my explanation, so as to give my pupil some idea of all these sciences and a great wish to learn them. When I have finished I shall have shown myself a regular pedant, I shall have made a great display of learning, and not one single idea has he understood. He is longing to ask me again, "What is the use of taking one's bearings?" but he dare not for fear of vexing me. He finds it pays best to pretend to listen to what he is forced to hear.

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