Assertion: cicero's plato | /r/HasProperty | 427–347 bc
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Source sentences:
text: Plato (427–347 BC) famously outlined the differences between true and false rhetoric in a number of dialogues; particularly the Gorgias and Phaedrus dialogues wherein Plato disputes the sophistic notion that the art of persuasion (the sophists' art, which he calls "rhetoric"), can exist independent of the art of dialectic.