American traditions and the American ethic require us to be truthful, but the most important reason is that truth is the best propaganda and lies are the worst. To be persuasive we must be believable; to be believable we must be credible; to be credible we must be truthful. It is as simple as that.
Bio: David Easton was a Canadian-born American political scientist. Easton, who was born in Toronto, Ontario, came to the United States in 1943. From 1947-1997, he served as a professor of political science at the University of Chicago.