“If the pupil proves to be of so perverse a disposition that he would rather listen to some idle tale than to the account of a glorious voyage or to a wise conversation, when he hears one; if he turns away from the drum-beat that awakens young ardour in his comrades, to listen to another tattoo that summons him to a display of juggling; if he does not fervently feel it to be pleasanter and sweeter to return from a wrestling-match, dusty but victorious, with the prize in his hand, than from a game of tennis or a ball, I can see no other remedy that for his tutor to strangle him before it is too late, if there are no witnesses.”

“Were our pupil's disposition so bizarre that he would rather hear a tall story than the account of a great voyage or a wise discussion; that at the sound of a drum calling the youthful ardour of his comrades to arms he would turn aside for the drum of a troop of jugglers; that he would actually find it no more delightful and pleasant to return victorious covered in the dust of battle than after winning a prize for tennis or dancing; then I know no remedy except that his tutor should quickly strangle him when nobody is looking or apprentice him to make fairy-cakes in some goodly town - even if he were the heir of a Duke - following Plato's precept that functions should be allocated not according to the endowments of men's fathers but the endowments of their souls.”

“Let the tutor make his charge pass everything through a sieve and lodge nothing in his head on mere authority and trust: let not Aristotle's principles be principles to him any more than those of the Stoics or Epicureans. Let this variety of ideas be set before him; he will choose if he can; if not, he will remain in doubt. Only the fools are certain and assured. For if he embraces Xenophon's and Plato's opinions by his own reasoning, they will no longer be theirs, they will be his. He who follows another follows nothing. He finds nothing; indeed he seeks nothing. We are not under a king; let each one claim his own freedom. Let him know that he knows, at least. He must imbibe their ways of thinking, not learn their precepts. And let him boldly forget, if he wants, where he got them, but let him know how to make them his own. Truth and reason are common to everyone, and no more belong to the man who first spoke them than to the man who says them later. It is no more according to Plato than according to me, since he and I understand and see it the same way. The bees plunder the flowers here and there, but afterward they make of them honey, which is all theirs; it is no longer thyme or marjoram. Even so with the pieces borrowed from others; he will transform and blend them to make a work of his own, to wit, his judgment. His education, work, and study aim only at forming this.”

“Let this variety of ideas be set before him; he will choose if he can; if not, he will remain in doubt. Only the fools are certain and assured. For if he embraces Xenophon's and Plato's opinions by his own reasoning, they will no longer be theirs, they will be his. He who follows another follows nothing. He finds nothing; indeed he seeks nothing. We are not under a king; let each one claim his own freedom [Seneca]. Let him know that he knows, at least. He must imbibe their ways of thinking, not learn their precepts. And let him boldly forget, if he wants, where he got them, but let him know how to make them his own. Truth and reason are common to everyone, and no more belong to the man who first spoke them than to the man who says them later. It is no more according to Plato than according to me, since he and I understand and see it the same way. The bees plunder the flowers here and there, but afterward they make of them honey, which is all theirs; it is no longer thyme or marjoram. Even so with the pieces borrowed from others; he will transform and blend them to make a work of his own, to wit, his judgment. His education, work, and study aim only at forming this.”

“You never speak about yourself without loss. Your self-condemnation is always accredited, your self-praise discredited. There may be some people of my temperament, I who learn better by contrast than by example, and by flight than by pursuit. This was the sort of teaching that Cato the Elder had in view when he said that the wise have more to learn from the fools than the fools from the wise; and also that ancient lyre player who, Pausanias tells us, was accustomed to force his pupils to go hear a bad musician who lived across the way, where they might learn to hate his discords and false measures.”

“If anyone gets intoxicated with his knowledge when he looks beneath him, let him turn his eyes upward toward past ages, and he will lower his horns, finding there so many thousands of minds that trample him underfoot. If he gets into some flattering presumption about his valor, let him remember the lives of the two Scipios, so many armies, so many nations, all of whom leave him so far behind them. No particular quality will make a man proud who balances it against the many weaknesses and imperfections that are also in him, and, in the end, against the nullity of man’s estate.”

“Let the tutor not merely require a verbal account of what the boy has been taught but the meaning and the substance of it: let him judge how the child has profited from it not from the evidence of his memory but from that of his life. Let him take what the boy has just learned and make him show him dozens of different aspects of it and then apply it to just as many different subjects, in order to find out whether he has really grasped it and make it part of himself, judging the boy's progress by what Plato taught about education. Spewing up food exactly as you have swallowed it is evidence of a failure to digest and assimilate it; the stomach has not done its job if, during concoction, it fails to change the substance and the form of what it is given.”