The truth is, that very few have leisure from indispensable business, to employ their thoughts upon narrative or characters; and among those to whom fortune has given the liberty of living more by their own choice, many create to themselves engagements, by the indulgence of some petty ambition, the admission of some insatiable desire, or the toleration of some predominant passion. The man whose whole wish is to accumulate money, has no other care than to collect interest, to estimate securities, and to engage for mortgages: the lover disdains to turn his ear to any other name than that of Corinna; and the courtier thinks the hour lost which is not spent in promoting his interest, and facilitating his advancement. The adventures of valour, and the discoveries of science, will find a cold reception, when they are obtruded upon an attention thus busy with its favourite amusement, and impatient of interruption or disturbance. But not only such employments as seduce attention by appearances of dignity, or promises of happiness, may restrain the mind from excursion and inquiry; curiosity may be equally destroyed by less formidable enemies; it may be dissipated in trifles, or congealed by indolence. The sportsman and the man of dress have their heads filled with a fox or a horse-race, a feather or a ball; and live in ignorance of every thing beside, with as much content as he that heaps up gold, or solicits preferment, digs the field, or beats the anvil; and some yet lower in the ranks of intellect, dream out their days without pleasure or business, without joy or sorrow, nor ever rouse from their lethargy to hear or think. Even of those who have dedicated themselves to knowledge, the far greater part have confined their curiosity to a few objects, and have very little inclination to promote any fame, but that which their own studies entitle them to partake. The naturalist has no desire to know the opinions or conjectures of the philologer: the botanist looks upon the astronomer as a being unworthy of his regard: the lawyer scarcely hears the name of a physician without contempt; and he that is growing great and happy by electrifying a bottle, wonders how the world can be engaged by trifling prattle about war or peace.