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And  though   a   philosopher   may live   remote   from   business,   the genius   of   philosophy,   if   carefully cultivated   by   several,    must gradually    diffuse    itself   throughout   the   whole   society, and   bestow   a   similar   correctness on   every   art   and   calling. 

                            David hume, Enquiry concerning human undestanding, Sec 1 § 5