Wild Genius

“Anything you are ashamed to have the postmaster or postmistress read, and therefore seal up, is known as first-class matter. Also, postal cards, where you're only allowed to argue on one side. If you think your letter should travel slowly, invest ten cents in a Special Delivery Stamp. This will insure a nice, leisurely journey, lasting from one to two days longer than by the cheap two-cent route.”