Courtesy is the politic witchery of great personages.

The passions are the humors of the mind, and the least excess sickens our judgment. If the disease spreads to the mouth, your reputation will be in danger.

Evil report carries further than any applause.

Never open the door to a lesser evil, for other and greater ones invariably slink in after it.

No' and 'Yes' are words quickly said, but they need a great amount of thought before you utter them.

He that communicates his secret to another makes himself that other's slave.

Always act as if you were seen.