His teaching, however, so valuable in its own day, is not important as a contribution towards a general theory of æesthetics. Boileau attempted to lay down the principles universally binding upon writers of poetry; but he had not the equipment necessary for such a task. His knowledge was limited, his sympathies were narrow, and his intellectual powers lacked profundity. The result was that he committed the common fault of writers immersed in the business of contemporary controversy--he erected the precepts, which he saw to be salutary so far as his own generation was concerned, to the dignity of universal rules. His message, in reality, was for the France of Louis XIV; he enunciated it as if it was the one guide to literary salvation for all ages and in all circumstances; and it so happened that for about a century it was accepted at his own valuation by the majority of civilized mankind. Boileau detested--and rightly detested--the extravagant affectations of the _précieux_ school, the feeble pomposities of Chapelain, the contorted, inflated, logic-chopping heroes of Corneille's later style; and the classical reaction against these errors appeared to him in the guise of a return to the fundamental principles of Nature, Reason, and Truth. In a sense he was right: for it is certain that the works of Molière and Racine were more natural, more reasonable, and more truthful than those of l'Abbé Cotin and Pradon; his mistake lay in his assumption that these qualities were the monopoly of the Classical school. Perceiving the beauty of clarity, order, refinement, and simplicity, he jumped to the conclusion that these were the characteristics of Nature herself, and that without them no beauty could exist. He was wrong. Nature is too large a thing to fit into a system of aesthetics; and beauty is often--perhaps more often than not--complex, obscure, fantastic, and strange. At the bottom of all Boileau's theories lay a hearty love of sound common sense. It was not, as has sometimes been asserted, imagination that he disliked, but singularity. He could write, for instance, an enthusiastic appreciation of the sublime sentence, 'God said, Let there be light, and there was light'; for there imagination is clothed in transparent beauty, and grandeur is achieved by the simplest means. More completely than any of his great contemporaries, Boileau was a representative of middle-class France.