In the same manner, there is wisdom and depth in the philosophy which always considers the origin and the germ, and glories in history as one consistent epic.[7] Yet every student ought to know that mastery is acquired by resolved limitation. And confusion ensues from the theory of Montesquieu and of his school, who, adapting the same term to things unlike, insist that freedom is the primitive condition of the race from which we are sprung.[8] If we are to account mind not matter, ideas not force, the spiritual property that gives dignity, and grace, and intellectual value to history, and its action on the ascending life of man, then we shall not be prone to explain the universal by the national, and civilisation by custom.[9] A speech of Antigone, a single sentence of Socrates, a few lines that were inscribed on an Indian rock before the Second Punic War, the footsteps of a silent yet prophetic people who dwelt by the Dead Sea, and perished in the fall of Jerusalem, come nearer to our lives than the ancestral wisdom of barbarians who fed their swine on the Hercynian acorns. [Sidenote: MEDIÆVAL LIMIT OF MODERN HISTORY] For our present purpose, then, I describe as modern history that which begins four hundred years ago, which is marked off by an evident and intelligible line from the time immediately preceding, and displays in its course specific and distinctive characteristics of its own.[10] The modern age did not proceed from the mediæval by normal succession, with outward tokens of legitimate descent. Unheralded, it founded a new order of things, under a law of innovation, sapping the ancient reign of continuity. In those days Columbus subverted the notions of the world, and reversed the conditions of production, wealth and power; in those days, Machiavelli released government from the restraint of law; Erasmus diverted the current of ancient learning from profane into Christian channels; Luther broke the chain of authority and tradition at the strongest link; and Copernicus erected an invincible power that set for ever the mark of progress upon the time that was to come. There is the same unbound originality and disregard for inherited sanctions in the rare philosophers as in the discovery of Divine Right, and the intruding Imperialism of Rome. The like effects are visible everywhere, and one generation beheld them all. It was an awakening of new life; the world revolved in a different orbit, determined by influences unknown before. After many ages persuaded of the headlong decline and impending dissolution of society,[11] and governed by usage and the will of masters who were in their graves, the sixteenth century went forth armed for untried experience, and ready to watch with hopefulness a prospect of incalculable change. [Sidenote: INFLUENCE OF KNOWLEDGE ON MODERN HISTORY]