Ars Brevis, Ramon Lull: Combinatory Wheel, Quarta Figura
Commentary on Combinatory Wheel, Quarta Figura
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Ramon Lull's Ars Brevis is an abridged version of his Ars Generalis Ultima, a medieval treatise describing a mnemonic system that also serves as a means for deducing new information from methodological recombinations of memorized material. The manuscript of the Ars Brevis is housed at Biblioteca El Escorial, Madrid, Ms. f.IV.12.
The combinatory wheel in Ramon Lull’s Ars Brevis represents a sort of Kabbalistic algorithm for scientifically drawing conclusions about the attributes of God. The figure involves three concentric wheels which revolve independently, each divided into compartments labeled B-K. Each letter represents one of the names or attributes of God: bonitas (goodness), Magnitudo (greatness), Eternitas (Eternity), Potestas (power), sapientia (wisdom), voluntas (will), virtus (virtue), veritas (truth), gloria (glory).
In the Ars Generalis Ultima, Lull expands on the notation used in the A Figure, noting that each positive attribute also implies its opposite: