Georg C. Lichtenberg Quotes | Doubt must be no more than vigilance, otherwi...

"Doubt must be no more than vigilance, otherwise it can become dangerous."

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Three of the gravest failings, want of sense, of courage, or of vigilance.

— Thucydides

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Our government conceived in freedom and purchased with blood can be preserved only by constant vigilance.

— William Jennings Bryan

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