Thought was then free only in this manner; hence it never wrote itself out completely except on the books called edifices. Thought, under the form of edifice, could have beheld itself burned in the public square by the hands of the executioner, in its manuscript form, if it had been sufficiently imprudent to risk itself thus; thought, as the door of a church, would have been a spectator of the punishment of thought as a book. Having thus only this resource, masonry, in order to make its way to the light, flung itself upon it from all quarters. Hence the immense quantity of cathedrals which have covered Europe—a number so prodigious that one can hardly believe it even after having verified it. All the material forces, all the intellectual forces of society converged towards the same point: architecture. In this manner, under the pretext of building churches to God, art was developed in its magnificent proportions.