The Republic · ¶78

Of course this was not the original assertion, nor is the new interpretation accepted by Thrasymachus himself. But Socrates is not disposed to quarrel about words, if, as he significantly insinuates, his adversary has changed his mind. In what follows Thrasymachus does in fact withdraw his admission that the ruler may make a mistake, for he affirms that the ruler as a ruler is infallible. Socrates is quite ready to accept the new position, which he equally turns against Thrasymachus by the help of the analogy of the arts. Every art or science has an interest, but this interest is to be distinguished from the accidental interest of the artist, and is only concerned with the good of the things or persons which come under the art. And justice has an interest which is the interest not of the ruler or judge, but of those who come under his sway.

Plato · translated by Benjamin Jowett · composite transcription based on the 1888 third edition
Benjamin Jowett, revised third edition (1888), with Stephanus numbering from the 1908 edition; composite transcription, Project Gutenberg #55201
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