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In page Proclus:
"Another important source for the influence of Proclus on the Middle Ages is Boethius's Consolation of Philosophy, which has a number of Proclus principles and motifs.[citation needed] The central poem of Book III is a summary of Proclus's Commentary on the Timaeus[citation needed], and Book V contains the important principle of Proclus that things are known not according to their own nature, but according to the character of the knowing subject.[1]