译文：人情世故就像流水一样有高下之别，世事就像白云一样卷起展开，变化无常。赏析：我们在社会上立足，总会遇到这样或那样的糟心事和烦心人，但和生命健康比起来，这些不算什么。世事无常，人情淡薄，我们顺其自然即可。

一个好的旅行者不知道他要去哪里。

The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.

The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land, is yet to come.

最好的决策来自于同时倾听数据和人的声音。

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.