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Rh an art than its professors; a farmer will tell you, in two words, that he has broken his leg; but a surgeon, after a long discourse, shall leave you as ignorant as you were before." This could only have been said, by such an exact observer of life, in gratification of malignity, or in ostentation of acuteness. Every hour produces instances of the necessity of terms of art. Mankind could never conspire in uniform affectation; it is not but by necessity that every science and every trade has its peculiar language. They that content themselves with general ideas may rest in general terms; but those, whose studies or employments force them upon closer inspection, must have names for particular parts, and words by which they may express various modes of combination, such as none but themselves have occasion to consider.

Artists are indeed sometimes ready to suppose that none can be strangers to words to which themselves are familiar, talk to an incidental inquirer as they talk to one another, and make their knowledge ridiculous by injudicious obtrusion. An art cannot be taught but by its proper terms, but it is not always necessary to teach the art.

That the vulgar express their thoughts clearly is far from true; and what perspicuity