This is the Noble Castle of human wit and learning, encircled with its seven scholastic walls, the Trivium , Logic, Grammar, Rhetoric, and the Quadrivium , Arithmetic, Astronomy, Geometry, Music.

The fair rivulet is Eloquence, which Dante does not seem to consider a very profound matter, as he and Virgil pass over it as if it were dry ground. ↩

Of this word “enamel” Mr. Ruskin, Modern Painters , III 227, remarks:⁠—