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GO OUT OF MY CLASS-ROOM on purpose to shout and argue and make wild guesses about things they know nothing about!

However, what they choose to do is not our business. You are living in an orderly school; and of course you do not argue about things you know nothing about. Let us go back to our Hebrew electrician.

He had shown the people of Israel what comes of sticking peaceably to one's working hypothesis. If he had been thoroughly logical he would have gone on sticking to it. He would have said to the people of Israel, "Now you see that I can teach you electricity; this land is going to be my class-room; make those shouting people hold their tongues, or else go away; so that we can go on with our lessons in peace. When they want to learn electricity properly, they can come back." But he was in too great a hurry to make a complete and final settlement. A good teacher sends a noisy, troublesome pupil out of his Class-room for the time, but does not expel her from the school merely for being troublesome. The shouting people were among the facts which "I 75