Not only do they make endless attacks on Locke, but at times they assail even Newton for having mechanized life, though Newton’s comparison of himself to a child picking up pebbles on the seashore would seem to show that he had experienced “the feeling infinite.” The elaboration of science into a closed system with the aid of logic and pure mathematics is as a matter of fact to be associated with Descartes rather than with Newton. Neither Newton nor Descartes, one scarcely needs add, wished to subject man entirely to the natural law and the nexus of physical causes; they were not in short determinists. Yet the superficial rationalism of the Enlightenment was in the main of Cartesian origin. This Cartesian influence ramifies in so many directions and is related at so many points to the literary movement, and there has been so much confusion about this relationship, that we need to pause here to make a few distinctions. Perhaps what most strikes one in the philosophy of Descartes is its faith in logic and abstract reasoning and the closely allied processes of mathematical demonstration. Anything that is not susceptible of clear proof in this logical and almost mathematical sense is to be rejected. Now this Cartesian notion of clearness is fatal to a true classicism. The higher reality, the true classicist maintains, cannot be thus demonstrated; it can only be grasped, and then never completely, through a veil of imaginative illusion. Boileau is reported to have said that Descartes had cut the throat of poetry; and this charge is justified in so far as the Cartesian requires from poetry a merely logical clearness. This conception of clearness was also a menace to the classicism of the seventeenth century which rested in the final analysis not on logic but on tradition. This appeared very clearly in the early phases of the quarrel between ancients and moderns when literary Cartesians like Perrault and Fontenelle attacked classical dogma in the name of reason. In fact one may ask if any doctrine has ever appeared so fatal to every form of tradition--not merely literary but also religious and political--as Cartesianism. The rationalist of the eighteenth century was for dismissing as “prejudice” everything that could not give a clear account of itself in the Cartesian sense. This riot of abstract reasoning (_la raison raisonnante_) that prepared the way for the Revolution has been identified by Taine and others with the classic spirit. A more vicious confusion has seldom gained currency in criticism. It is true that the French have mixed a great deal of logic with their conception of the classic spirit, but that is because they have mixed a great deal of logic with everything. I have already mentioned their tendency to substitute a logical for an imaginative verisimilitude; and strenuously logical classicists may be found in France from Chapelain to Brunetière. Yet the distinction that should keep us from confusing mere