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purpose of this Platonic dialogue and its relationship to the books of the Republic Plato's Republic is briefly explained. Chapter 7 finally gives a confusing and incorrect division, which fits neither the Timaeus nor Chalcidius's own arguments. Chapters 8–355 then follow with the actual commentary, which, like the translation, extends to 53 C.
Before I approach the task of determining more precisely the presumed sources from which Chalcidius drew, a general overview shall sketch the eclectic character of Chalcidius as briefly as possible. Such an overview provides us first with the secure conviction that we may not expect anything original from Chalcidius; but then it also orients us regarding the time in which the commentary may have been composed. Before we proceed to the individual examination, it should be mentioned that in the enumeration of the individual authors, their significance for the Chalcidian commentary should be considered rather than chronology.
In a commentary on a Platonic dialogue, it is not surprising that Platonism determines its fundamental coloration. Plato is considered by Chalcidius to be the greatest philosopher, who also has the gift of expressing his views clearly and understandably.