[178] The dedication of the _Regnes de Claude et de Neron_ to Naigeon, iii. 9. This was the mood in which Diderot wrote his singular apology for the life and character of Seneca. Rosenkranz makes the excellent reflection that though Diderot attained to a more free comprehension of Greek art, and especially of Homer, than most of his contemporaries, yet even with him the Roman element was dominant. It was Horace, Terence, Lucretius, Tacitus, Seneca, who to the very end came closer to him than any of the Greeks. The moralising reflection, the satirical tendency, the declamatory form of the Romans, all had an irresistible attraction for him.[179] Both Roger Bacon and Francis Bacon had preceded him in admiration for Seneca, and Montaigne found Cicero tiresome and unprofitable compared with the author of the Epistles to Lucilius. "When there comes any misfortune to a European," says the imaginary oriental of Montesquieu's _Persian Letters_, "his only resource is the reading of a philosopher called Seneca."[180] [179] Diderot's _Leben_, ii. 357. [180] See Mr. Brewer's preface to Roger Bacon, p. 73.; Montaigne's chapter _Des Livres_, and the _Defense de Seneque et de Plutarque._; _Let. Pers._, 33. But Diderot was not a man to admire by halves, and to literary praise of Seneca's writings he added a thoroughgoing vindication of his career. In his early days he had referred disparagingly to Seneca,[181] but reflection or accident had made him change his mind. The cheap severity of abstract ethics has always abounded against Seneca, and this severity was what Diderot had all his life found insupportable. Holbach had induced Lagrange, a young man of letters whom he had rescued from want, to undertake the translation of Seneca, and when Lagrange died, Holbach prevailed on Naigeon, Diderot's fervid disciple, to complete and revise the work, which still remains the best of the French versions. That done, then both Holbach and Naigeon urged Diderot to write an account of the philosopher. [181] _Essai sur le Merite et la Vertu._ _Oeuv._, i. 118, _note_.