But the reason I glanced upon but now, may it not also hence proceed, that, our studies in France having almost no other aim but profit, except as to those who, by nature born to offices and employments rather of glory than gain, addict themselves to letters, if at all, only for so short a time (being taken from their studies before they can come to have any taste of them, to a profession that has nothing to do with books), there ordinarily remain no others to apply themselves wholly to learning, but people of mean condition, who in that only seek the means to live; and by such people, whose souls are, both by nature and by domestic education and example, of the basest alloy the fruits of knowledge are immaturely gathered and ill digested, and delivered to their recipients quite another thing. For it is not for knowledge to enlighten a soul that is dark of itself, nor to make a blind man see. Her business is not to find a man's eyes, but to guide, govern, and direct them, provided he have sound feet and straight legs to go upon. Knowledge is an excellent drug, but no drug has virtue enough to preserve itself from corruption and decay, if the vessel be tainted and impure wherein it is put to keep. Such a one may have a sight clear enough who looks asquint, and consequently sees what is good, but does not follow it, and sees knowledge, but makes no use of it. Plato's principal institution in his Republic is to fit his citizens with employments suitable to their nature. Nature can do all, and does all. Cripples are very unfit for exercises of the body, and lame souls for exercises of the mind. Degenerate and vulgar souls are unworthy of philosophy. If we see a shoemaker with his shoes out at the toes, we say, 'tis no wonder; for, commonly, none go worse shod than they. In like manner, experience often presents us a physician worse physicked, a divine less reformed, and (constantly) a scholar of less sufficiency, than other people. Old Aristo of Chios had reason to say that philosophers did their auditors harm, forasmuch as most of the souls of those that heard them were not capable of deriving benefit from instruction, which, if not applied to good, would certainly be applied to ill: ["They proceeded effeminate debauchees from the school of Aristippus, cynics from that of Zeno." --Cicero, De Natura Deor., iii., 31.]