Sincerity is the luxury allowed, like diadems and authority, only to the highest rank. . . . Every man alone is sincere. At the entrance of a second person, hypocrisy begins.
Source: Essays, Friendship (First Series), 1841.
-- Ralph Waldo Emerson, (May 25 1803-1882), US philosopher, poet, essayist; He was the main spokesman of his time for moral optimism and belief in the individual: Self-Reliance, 1844.