Thrasymachus Injustice Analysis

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In the Republic, Thrasymachus has rather compelling definition of justice. He says that it is “...nothing other than the advantage of the stronger.” From this definition Thrasymachus constructs a corollary: the stronger use injustice so injustice itself is more powerful than justice. Is justice simply whatever the current rulers decide it should be, whether in a democratic, tyrannical or oligarchical system? Or is there something more to it, as Socrates argues? One of the potentially faulty arguments Socrates uses to ponder Thrasymachus’ definition of justice involves considering injustice within a single person. In other words, this means thinking about conflict within an individual’s “soul”. In his treatment of Thrasymachus’ position that injustice is stronger than justice, Socrates evaluates the most extreme cases of injustice. This argument appeals to logic that does not necessarily contradict Thrasymachus’ ideology. Putting aside Socrates logical fallacies for a moment, we must address some naïve surface-level observations that may lead to an inaccurate interpretation. Upon a reading of Book I, one may be tempted to conclude that Socrates defeats Thrasymachus because of the simple fact that at times Thrasymachus refrains from challenging Socrates’ suppositions. Throughout their entire interaction, Socrates attempts to use Thrasymachus’ own logic against him and get him to agree with the exact opposites of some of his original arguments; this strategy is somewhat
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