No one gossips about other people's secret virtues.
You should not live one way in private, another in public.
Vigorous writing is concise.
You can learn as much - or more - from one glance at a private space as you can from hours of exposure to a public face.
The louder he talked of his honor, the faster we counted our spoons.
Speak when you are angry--and you will make the best speech you'll ever regret.
Humor is also a way of saying something serious.