The Six Keys of Eudoxus

This alchemical text, circulated under the name Eudoxus, lays out six emblematic 'keys' or principles for understanding the transmutation of matter. It is valued for its compact, allegorical style and for the way it presents alchemical practice as both a chemical art and a spiritual discipline, with guidance on matter, fire, circulation, and the hidden unity of nature.

Eudoxus is a difficult figure to identify with certainty in the context of esoteric literature, and the name may refer to different ancient writers. In general, the name is associated with antiquity and with philosophical or cosmological thought rather than with a clearly defined occult corpus.