The Republic · Rep. 499a–499c

And this was what we foresaw, and this was the reason why truth forced us to admit, not without fear and hesitation, that neither cities nor States nor individuals will ever attain perfection until the small class of philosophers whom we termed useless but not corrupt are providentially compelled, whether they will or not, to take care of the State, and until a like necessity be laid on the State to obey them; or until kings, or if not kings, the sons of kings or princes, are divinely inspired with a true love of true philosophy. That either or both of these alternatives are impossible, I see no reason to affirm: if they were so, we might indeed be justly ridiculed as dreamers and visionaries. Am I not right?

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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