It is undoubtedly true, though it may seem paradoxical, but in general, those who are habitually employed in finding and displaying faults, are unqualified for the work of reformation; because their minds are not only unfurnished with patterns of the fair and good, but by habit they come to take no delight in the contemplation of those things. By hating vices too much, they come to love men too little. It is therefore not wonderful that they should be indisposed and unable to serve them. From hence arises the complexional disposition of some of your guides to pull everything in pieces. At this malicious game they display the whole of their quadrimanous activity. As to the rest, the paradoxes of eloquent writers, brought forth purely as a sport of fancy, to try their talents, to rouse attention and excite surprise, are taken up by these gentleman, not in the spirit of the original authors, as means of cultivating their taste and improving their style. These paradoxes become with them serious grounds of action, upon which they proceed in regulating the most important concerns of the state. Cicero ludicrously describes Cato as endeavouring to act, in the commonwealth, upon the school paradoxes, which exercised the wits of the junior students in the Stoic philosophy. If this was true of Cato, these gentlemen copy after him in the manner of some persons who lived about his time--pede nudo Catonem. Mr. Hume told me that he had from Rousseau himself the secret of his principles of composition. That acute, though eccentric observer, had perceived, that to strike and interest the public, the marvellous must be produced; that the marvellous of the heathen mythology had long since lost its effects; that giants, magicians, fairies, and heroes of romance which succeeded, had exhausted the portion of credulity which belonged to their age; that now nothing was left to a writer but that species of the marvellous which might still be produced, and with as great an effect as ever, though in another way; that is, the marvellous in life, in manners, in characters, and in extraordinary situations, giving rise to new and unlooked-for strokes in politics and morals. I believe, that were Rousseau alive, and in one of his lucid intervals, he would be shocked at the practical frenzy of his scholars, who in their paradoxes are servile imitators, and even in their incredulity discover an implicit faith. MORAL HEROES.