And next to these is cried up, forsooth, that goodly sentence of Plato's, "Happy is that commonwealth where a philosopher is prince, or whose prince is addicted to philosophy." When yet if you consult historians, you'll find no princes more pestilent to the commonwealth than where the empire has fallen to some smatterer in philosophy or one given to letters. To the truth of which I think the Catoes give sufficient credit; of whom the one was ever disturbing the peace of the commonwealth with his hair-brained accusations; the other, while he too wisely vindicated its liberty, quite overthrew it. Add to this the Bruti, Casii, nay Cicero himself, that was no less pernicious to the commonwealth of Rome than was Demosthenes to that of Athens. Besides M. Antoninus (that I may give you one instance that there was once one good emperor; for with much ado I can make it out) was become burdensome and hated of his subjects upon no other score but that he was so great a philosopher. But admitting him good, he did the commonwealth more hurt in leaving behind him such a son as he did than ever he did it good by his own government. For these kind of men that are so given up to the study of wisdom are generally most unfortunate, but chiefly in their children; Nature, it seems, so providently ordering it, lest this mischief of wisdom should spread further among mankind. For which reason it is manifest why Cicero's son was so degenerate, and that wise Socrates' children, as one has well observed, were more like their mother than their father, that is to say, fools.
However this were to be born with, if only as to public employments they were "like a sow upon a pair of organs," were they anything more apt to discharge even the common offices of life. Invite a wise man to a feast and he'll spoil the company, either with morose silence or troublesome disputes. Take him out to dance, and you'll swear "a cow would have done it better." Bring him to the theatre, and his very looks are enough to spoil all, till like Cato he take an occasion of withdrawing rather than put off his supercilious gravity. Let him fall into discourse, and he shall make more sudden stops than if he had a wolf before him. Let him buy, or sell, or in short go about any of those things without there is no living in this world, and you'll say this piece of wisdom were rather a stock than a man, of so little use is he to himself, country, or friends; and all because he is wholly ignorant of common things and lives a course of life quite different from the people; by which means it is impossible but that he contract a popular odium, to wit, by reason of the great diversity of their life and souls. For what is there at all done among men that is not full of folly, and that too from fools and to fools? Against which universal practice if any single one shall dare to set up his throat, my advice to him is, that following the example of Timon, he retire into some desert and there enjoy his wisdom to himself.