All virtue is summed up in dealing justly. – Aristotle

The vices we scoff at in others, laugh at us within ourselves. – Thomas Edward Brown

Piety and corruption go together like hot dogs and mustard. They have to. No one can fulfill the demands of piety; as a daily demand, it is inhuman. So it inspires the opposite—just for the sheer health of the body, if not the soul. – Norman Mailer, “Primitive Man, Art and Science, Evil and Judgment,” The Spooky A

Virtue is an angel, but she is a blind one, and must ask Knowledge to show her the pathway that leads to her goal. – Horace Mann, "Thoughts for a Young Man," 1859