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.

Wikimedia Commons · CC0 1.0 · Hover to magnify, click for fullscreen
Original fileA partially nude woman representing Rhetoric sits in profile, wearing a laurel wreath and holding a caduceus, the traditional staff of Mercury. She is draped in a fur-lined cloak and looks toward an elderly, bearded man who gazes at her with intense focus. Open books and architectural details in the background signify the academic and civic nature of this liberal art.
As one of the seven liberal arts (the Trivium), Rhetoric was fundamental to Renaissance humanism and the Hermetic tradition, representing the power of the 'Logos' or divine speech. The inclusion of the caduceus specifically links the art of persuasion to Mercury (Hermes), the messenger of the gods and patron of the Hermetic arts, who mediates between the celestial and terrestrial realms.
Per me formatur facundae gratia linguae, Aetherei qua Dij, regesq[ue] ducesq[ue] moventur.
Translation
Through me is formed the grace of an eloquent tongue, By which the heavenly gods, kings, and leaders are moved.
Martianus Capella
His work 'De nuptiis Philologiae et Mercurii' established the standard iconographic tradition of the Seven Liberal Arts, including Rhetoric's connection to Mercury.
Cornelis Drebbel
The engraver of this work was a famous inventor and alchemist who sought to apply natural philosophy to mechanical wonders.
Rijksmuseum, Amsterdam
Wikimedia Commons · CC0 1.0
March 24, 2026