This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

Quadrivium miscellany with Rithmomachia
Step into the mind of the medieval polymath with this definitive guide to the Quadrivium, where mathematical theory meets 'The Philosopher's Game.' From the construction of the astrolabe to the divine geometry of the soul, discover how the Middle Ages mapped the stars and the spirit through the elegance of number.
Major Themes
Showing 40 of 752 entries.