 An influential defender of the real distinction between essence and existence was Giles of Rome. Since he uses the terminology of “thing” (res) for both concepts, he was criticized for turning “existence” into a thing, which itself exists only if another thing “existence” is added, and so on ad infinitum. This argument was voiced against the real distinction by Siger of Brabant and Godfrey of Fontaines (Wippel 1982), but it originally comes from Averroes, who flatly rejects Avicenna’s distinction in his Long Commentary on the Metaphysics (IV.3).