The Republic · Rep. 466b–466c

At the same time I ought here to repeat what I have said elsewhere, that if any of our guardians shall try to be happy in such a manner that he will cease to be a guardian, and is not content with this safe and harmonious life, which, in our judgment, is of all lives the best, but infatuated by some youthful conceit of happiness which gets up into his head shall seek to appropriate the whole state to himself, then he will have to learn how wisely Hesiod spoke, when he said, ‘half is more than the whole.’

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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