世界因你的榜样而改变，而不是因你的意见。

食物的未来取决于我们今天如何对待土壤。

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.

我们拥有的东西就是拥有我们的东西。