Conscience is the inner voice that warns us somebody may be looking. – Henry Louis Mencken, “Sententiae,” This and That: A Mencken Chrestomathy, 1948

There is no man so good that if he placed all his actions and thought under the scrutiny of the laws, he would not deserve hanging ten times in his life. – Michel de Montaigne, Essays, 1595

I never did, or countenanced, in public life, a single act inconsistent with the strictest good faith; having never believed there was one code of morality for a public, and another for a private man. – Thomas Jefferson, 1809