The history of the world, as it is writen and handed down by word of mouth, often fails us completely; but man’s intuitive capacity, though it often misleads, does lead, does not ever abandon one. And so, for instance, the tradition of the seven wonders of the world has always had associated with it the rumor that there was another, an eight wonder of the world, and concerning this eighth wonder there were various, perhaps contradictory, statements made, the vagueness of which was explained by the obscurity of ancient times.

—The Blue Octavo Notebooks (Second Notebook)