Becoming Great to the Detriment of History.—Every later master who leads the taste of art-lovers into his channel unconsciously gives rise to a selection and revaluation of the older masters and their works. Whatever in them is conformable and akin to him, and anticipates and foreshadows him, appears henceforth as the only important element in them and their works—a fruit in which a great error usually lies hidden like a worm.