цитата

[avva]

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The value of a piece of testimony usually increases in proportion to the nearness in time and space between the witness and the events about which he testifies.

This rule was doubtless hovering in the mind of the student who wrote in a comparison of Herodotus and Thucydides that Thucydides "had the advantage of being alive at the time he was writing."

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источник: Jacques Barzun, The Modern Researcher. Ch. 7: Truth and Causation