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Quote#Wisdom

The most difficult thing is to know what we do know, and what we do…

Quote byPetr Uspensky · 1878–1947

Commonly attributed — not confirmed in an authoritative edition. Cited on Wikiquote to: Tertium Organum (1912; 1922), Ch. I.

English (original)

The most difficult thing is to know what we do know, and what we do not know.

— Petr Uspensky

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