text:  Hence men of letters and women of letters form a caste by themselves much to their own disadvantage and still more to the injury of those to the improvement of whom they might imperceptibly contribute; hence the statesman or the lawyer or the writer generally keeps aloof from the great world which he leaves to idle young men and aged coxcombs; or if he enters it takes care to abstain from those topics on which his conversation would be most natural instructing and entertaining