The sensualism of the writers headed by Du Bos, who looked upon art as a mere pastime, like a tournament or a bull-fight, shows that the truth about Aesthetic had not yet succeeded in emerging from the other spiritual activities. Yet the new words and the new views of the seventeenth century have great importance for the origins of Aesthetic; they were the direct result of the restatement of the problem by the writers of the Renaissance, who themselves took it up where Antiquity had left it. These new words, and the discussions which arose from them, were the demands of Aesthetic for its theoretical justification. But they were not able to provide this justification, and it could not come from elsewhere. With Descartes, we are not likely to find much sympathy for such studies as relate to wit, taste, fancy, or feelings. He ignored the famous _non so che_; he abhorred the imagination, which he believed to result from the agitation of the animal spirits. He did not altogether condemn poetry, but certainly looked upon it as the _folle du logis_, which must be strictly supervised by the reason. Boileau is the aesthetic equivalent of Cartesian intellectualism, Boileau _que la raison à ses règles engage_, Boileau the enthusiast for allegory. France was infected with the mathematical spirit of Cartesianism and all possibility of a serious consideration of poetry and of art was thus removed. Witness the diatribes of Malebranche against the imagination, and listen to the Italian, Antonio Conti, writing from France in 1756 on the theme of the literary disputes that were raging at the time: "They have introduced the method of M. Descartes into belles-lettres; they judge poetry and eloquence independently of their sensible qualities. Thus they also confound the progress of philosophy with that of the arts. The Abbé Terrasson says that the moderns are greater geometricians than the ancients; therefore they are greater orators and greater poets." La Motte, Fontenelle, Boileau, and Malebranche carried on this battle, which was taken up by the Encyclopaedists, and when Du Bos published his daring book, Jean Jacques le Bel published a reply to it (1726), in which he denied to sentiment its claim to judge of art. Thus Cartesianism could not possess an Aesthetic of the imagination. The Cartesian J.P. de Crousaz (1715) found the beautiful to consist in what is approved of, and thereby reduced it to ideas, ignoring the pleasing and sentiment.