In a literary history, however, of the scale and plan of this present, the question of Montaigne's subjects and sentiments, interesting as it is, must not be allowed to obscure the question of the expression which he gave to these sentiments. His book is of the greatest importance in the history of French style, of an importance indeed which has been by no means invariably recognised by French literary historians themselves. It must be remembered that he at once attained, and never lost, an immense popularity. Thus the comparative oblivion which, owing to the reforms of the early seventeenth century and the brilliant period of production which followed them, overtook most of the men of the Renaissance, did not touch Montaigne. He, with Rabelais, remained a well of undefiled French, which all the artificial filtering of Malherbe and Boileau could not deprive of its refreshing and fertilising power. Writing, too, at a period subsequent, instead of anterior to the innovations of the Pleiade, Montaigne was able to incorporate, and thus to save, not a few of the neologisms which, valuable as they were, the purists of the seventeenth and eighteenth centuries neglected. Many words which his immediate contemporaries, and still more his successors, condemned, have made good their footing in the language, owing beyond all doubt to his influence. His style, too, was valuable for something else besides its vocabulary. It entered so seldom into the plan of Rabelais to write in any other than a burlesque tone, that he was rarely able to display his own incomparable faculty of writing ordinary French, pure, vigorous, graceful, and flexible at once. The tale-tellers and memoir-writers of the time matured an excellent narrative style, but one less suited for other forms of writing. The theologians often obeyed the Latinising influence too implicitly. But Montaigne, with his wide variety of subject, required and wrought out for himself a corresponding variety of style. His very discursiveness and the constant flow of new thoughts that welled up in him helped him to avoid the great curse of all the vulgar tongues in the Renaissance--the long jointed sentence; the easy colloquial manner at which he aimed reflected itself in a style less familiar indeed than avowed burlesque, but at the same time more familiar than any writer had before used in treating of similar subjects. Yet no one was more capable than Montaigne, on the rare occasions when he judged it proper, of showing his mastery of sustained and lofty eloquence. The often-quoted passage in which he rebukes the vanity of man (who, without letters patent or privilege, assumes to himself the honour of being the only created being cognisant of the secret of the universe) yields to nothing that had been written or was to be written for many years, fertile as the sixteenth and early seventeenth centuries were in both its characteristics, solemnity and dignity of expression.