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.

生存下来的不是最强壮的，也不是最聪明的，而是最能适应变化的。

亲爱的朋友，我们是太阳和月亮；我们是海洋和陆地。我们的目的不是成为对方，而是认识对方，学会看到对方，并为对方所是的那个人而尊敬他：彼此的对立和补充。

Freedom is never voluntarily given by the oppressor； it must be demanded by the oppressed.

你花所有时间试图找回被夺走的东西时，更多的东西正从门口溜走。