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Falsehoods of convenience or vanity, falsehoods from which no evil immediately visible ensues, except the general degradation of human testimony, are very lightly uttered, and once uttered are sullenly supported.

Samuel Johnson (2009). “The Lives of the Poets: A Selection”, p.219, OUP Oxford
Falsehoods of convenience or vanity, falsehoods from which no evil immediately visible ensues, except the general degradation of human testimony, are very lightly uttered, and once uttered are sullenly supported.