"The whole system of symbolism impressed on the art and the life of the Middle Ages must awaken the admiration of poets in all times. In reality, what colossal unity there is in Christian art, especially in its architecture! These Gothic cathedrals, how harmoniously they accord with the worship of which they are the temples, and how the idea of the Church reveals itself in them! Everything about them strives upwards, everything transubstantiates itself; the stone buds forth into branches and foliage, and becomes a tree ; the fruit of the vine and the ears of corn become blood and flesh; the man becomes God; God becomes a pure spirit."