From Niccolo Machiavelli's The Prince:
"To those seeing and hearing him, he should appear a man of compassion, a man of good faith, a man of integrity, a kind and religious man. And there is nothing so important as to seem to have this last quality. Men in general judge by their hands; because everyone is in a position to watch, few are in a position to come in close touch with you. Everyone sees what you appear to be, few experience what you really are." Emphasis mine.