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I consider that the kind of art which can implant honesty and justice in depraved natures has never existed and does not now exist, and that people who profess that power will grow weary and cease from their vain pretensions before such an education is ever found.1
1 Cf. Isoc. 13.21; Theog. 429 ff.; Xen. Mem. 1.2.19 ff.; Plat. Meno 95 ff.

