You find out who your real friends are when you're involved in a scandal.
你涉及丑闻时，你发觉你的真朋友是谁。
Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.
Quality is more important than quantity. One home run is much better than two doubles.