“Ignorance produces rashness, reflection timidity”

— Thucydides , History of the Peloponnesian War

Book II, 40.3
History of the Peloponnesian War, Book II

Original

Ἀμαθία μὲν θράσος, λογισμὸς δὲ ὄκνον φέρει

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Thucydides 76

Greek historian and Athenian general

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