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And whenever any one informs us that he has found a man who knows all the arts, and all things else that anybody knows, and every single thing with a higher degree of accuracy than any other man –whoever tells us this, I think that we can only imagine him to be a simple creature who is likely to have been deceived by some wizard or actor whom he met, and whom he thought all-knowing, because he himself was unable to analyze the nature of knowledge and ignorance and imitation.

And whenever any one informs us that he has found a man who knows all the arts, and all things else that anybody knows, and every single thing with a higher degree of accuracy than any other man –whoever tells us this, I think that we can only imagine him to be a simple creature who is likely to have been deceived by some wizard or actor whom he met, and whom he thought all-knowing, because he himself was unable to analyze the nature of knowledge and ignorance and imitation.

Approximate author period: c. 387 BC · classical

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Attribution & collection notes
Author or tradition
Plato
Attribution: attributed
Country attributed
Not established
A country attribution does not establish the earliest origin.
Historical period
Approximate author period: c. 387 BC · classical
Approximate historical context for attribution to Plato, based on life years -427 to -347. Opening discussion dates Plato circa 427–347 BCE. Ancient life years and the resulting grouping point are approximate, not independently verified dates for attributed quotations. Source: Plato on Knowledge in the Theaetetus — Stanford Encyclopedia of Philosophy, https://plato.stanford.edu/entries/plato-theaetetus/ (checked 2026-10-09). This does not establish the composition date or authenticate the attribution of these words. Source: https://plato.stanford.edu/entries/plato-theaetetus/ (accessed 2026-10-09).
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken.
Recorded source
Contributor-provided quotation collection

Supplied reference C; CSV row 45743; supplied attribution, independently unverified

A collection's publication date can be later than the words it records.