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The silence of a friend commonly amounts to treachery. His not daring to say anything in our behalf implies a tacit censure.

William Hazlitt (2015). “Delphi Collected Works of William Hazlitt (Illustrated)”, p.1465, Delphi Classics
The silence of a friend commonly amounts to treachery. His not daring to say anything in our behalf implies a tacit censure.