Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Prior to its translation by William of Moerbeke, it was unavailable to medieval Europe, except through the excerpts quoted in Macrobius's commentary on Cicero's Somnium Scipionis. One section denounces excessive Laconian philotimia, while Book III cites the need for a "noble lie" as the basis for the title concept. Discussion of a line divided into four parts and of the sun are metaphors for its author's idea of the levels of existence and of the absolute good respectively, but, the most famous excerpt features shackled prisoners watching shadows to illustrate the "theory of forms" in the "allegory of the cave". FTP, name this Platonic dialogue in which Socrates claims that a philosopher should rule the titular entity.
A:
Social Science