Le Bien selon Numénius et la République de Platon
The good according to Numenius and the Republic of Plato

Summary/Abstract: Among Plato’s dialogues, the Timaeus was the most authoritative for Middle Platonists. But alone it does not suffice to explain some of the most important tenets defended by these philosophers. A remarkable example is the doctrine of the three Principles (God, Ideas, matter), which characterizes imperial Platonism, and which cannot be stated on the basis of the Timaeus alone. In my paper I show that Numenius was influenced by the Republic as well: in the metaphor of the Sun he found the Good as first principle and an indication of a second principle which is further subdivided into an Intellect thinking the Ideas and a Demiurge ordering the universe. This interpretation provides him with some interesting solutions. But such an influence also raises difficulties insofar as the causal role of the first principle is concerned.

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