On the Decay of the Art of Lying is a short essay by Mark Twain from 1885. In it he deplores that way man's "e;most faithful friend"e; is being used and indeed misused, declaring that "e;the wise thing is for us diligently to train ourselves to lie thoughtfully, judiciously; to lie with a good object, and not an evil one; to lie for others' advantage, and not our own; to lie healingly,...