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156 powers of reflection and comparison are employed; and, in the mass of materials which ingenious absurdity has thrown together, genuine wit and useful knowledge may be sometimes found buried perhaps in grossness of expression, but useful to those who know their value; and such as, when they are expanded to perspicuity, and polished to elegance, may give lustre to works which have more propriety, though less copiousness of sentiment.

 

The knowledge of external nature, and the sciences which that knowledge requires or includes, are not the great or the frequent business of the human mind. Whether we provide for action or conversation, whether we wish to be useful or pleasing, the first requisite is the religious and moral knowledge of right and wrong; the next is an acquaintance with the history of mankind, and with those examples which may be said to embody truth, and prove by events the reasonableness of opinions. Prudence and justice are virtues and excellences of all times and of all places; we are perpetually moralists, but we are geometricians only by chance. Our 