as nature. Between theocratic architecture and this there is the difference that lies between a sacred language and a vulgar language, between hieroglyphics and art, between Solomon and Phidias.
If the reader will sum up what we have hitherto briefly, very briefly, indicated, neglecting a thousand proofs and also a thousand objections of detail, he will be led to this: that architecture was, down to the fifteenth century, the chief register of humanity; that in that interval not a thought which is in any degree complicated made its appearance in the world, which has not been worked into an edifice; that every popular idea, and every religious law, has had its monumental records; that the human race has, in short, had no important thought which it has not written in stone. And why? Because every thought, either philosophical or religious, is interested in perpetuating itself; because the idea which has moved one generation wishes to move others also, and leave a trace. Now, what a precarious immortality is that of the manuscript! How much more solid, durable, unyielding, is a book of stone! In order to destroy the written word, a torch and a Turk are sufficient. To demolish the constructed word, a social revolution, a terrestrial revolution are required. The barbarians passed over the Coliseum; the deluge, perhaps, passed over the Pyramids.
In the fifteeeth century everything changes.
Human thought discovers a mode of perpetuating itself, not only more durable and more resisting than architecture, but still more simple and easy. Architecture is dethroned. Gutenberg's letters of lead are about to supersede Orpheus's letters of stone.
The book is about to kill the edifice.
The invention of printing is the greatest event in history. It is the mother of revolution. It is the mode of expression of humanity which is totally renewed; it is human thought stripping off one form and donning another; it is the complete and definitive change of skin of that symbolical serpent which since the days of Adam has represented intelligence.
In its printed form, thought is more imperishable than
