The French philosopher Charron was one of the men least demoralised by party spirit, and least blinded by zeal for a cause. In a passage almost literally taken from St. Thomas, he describes our subordination under a law of nature, to which all legislation must conform; and he ascertains it not by the light of revealed religion, but by the voice of universal reason, through which God enlightens the consciences of men. Upon this foundation Grotius drew the lines of real political science. In gathering the materials of international law, he had to go beyond national treaties and denominational interests for a principle embracing all mankind. The principles of law must stand, he said, even if we suppose that there is no God. By these inaccurate terms he meant that they must be found independently of revelation. From that time it became possible to make politics a matter of principle and of conscience, so that men and nations differing in all other things could live in peace together, under the sanctions of a common law. Grotius himself used his discovery to little purpose, as he deprived it of immediate effect by admitting that the right to reign may be enjoyed as a freehold, subject to no conditions. When Cumberland and Pufendorf unfolded the true significance of his doctrine, every settled authority, every triumphant interest recoiled aghast. None were willing to surrender advantages won by force or skill, because they might be in contradiction, not with the Ten Commandments, but with an unknown code, which Grotius himself had not attempted to draw up, and touching which no two philosophers agreed. It was manifest that all persons who had learned that political science is an affair of conscience rather than of might or expediency, must regard their adversaries as men without principle, that the controversy between them would perpetually involve morality, and could not be governed by the plea of good intentions, which softens down the asperities of religious strife. Nearly all the greatest men of the seventeenth century repudiated the innovation. In the eighteenth, the two ideas of Grotius, that there are certain political truths by which every State and every interest must stand or fall, and that society is knit together by a series of real and hypothetical contracts, became, in other hands, the lever that displaced the world. When, by what seemed the operation of an irresistible and constant law, royalty had prevailed over all enemies and all competitors, it became a religion. Its ancient rivals, the baron and the prelate, figured as supporters by its side. Year after year, the assemblies that represented the self-government of provinces and of privileged classes, all over the Continent, met for the last time and passed away, to the satisfaction of the people, who had learned to venerate the throne as the constructor of their unity, the promoter of prosperity and power, the defender of orthodoxy, and the employer of talent.