Emile, bent on furnishing his island, will look at things from another point of view. Robinson would have thought more of a toolmaker's shop than all Saide's trifles put together. He would have reckoned the toolmaker a very worthy man, and Saide little more than a charlatan. "My son will have to take the world as he finds it, he will not live among the wise but among fools; he must therefore be acquainted with their follies, since they must be led by this means. A real knowledge of things may be a good thing in itself, but the knowledge of men and their opinions is better, for in human society man is the chief tool of man, and the wisest man is he who best knows the use of this tool. What is the good of teaching children an imaginary system, just the opposite of the established order of things, among which they will have to live? First teach them wisdom, then show them the follies of mankind." These are the specious maxims by which fathers, who mistake them for prudence, strive to make their children the slaves of the prejudices in which they are educated, and the puppets of the senseless crowd, which they hope to make subservient to their passions. How much must be known before we attain to a knowledge of man. This is the final study of the philosopher, and you expect to make it the first lesson of the child! Before teaching him our sentiments, first teach him to judge of their worth. Do you perceive folly when you mistake it for wisdom? To be wise we must discern between good and evil. How can your child know men, when he can neither judge of their judgments nor unravel their mistakes? It is a misfortune to know what they think, without knowing whether their thoughts are true or false. First teach him things as they really are, afterwards you will teach him how they appear to us. He will then be able to make a comparison between popular ideas and truth, and be able to rise above the vulgar crowd; for you are unaware of the prejudices you adopt, and you do not lead a nation when you are like it. But if you begin to teach the opinions of other people before you teach how to judge of their worth, of one thing you may be sure, your pupil will adopt those opinions whatever you may do, and you will not succeed in uprooting them. I am therefore convinced that to make a young man judge rightly, you must form his judgment rather than teach him your own.