Everything can be taken from a man but one thing: the last of the human freedoms—to choose one's attitude in any given set of circumstances.

Challenge the status quo, but respect the wisdom of those who came before you.

为人高傲自夸，喜欢独断专行，这是行事办事的祸患。

小智慧不及大智慧，寿命短不及寿命长。怎么知道会是这样呢？有一种早上生的菌，活不过一天，不知道白天和黑夜；寒蝉春生夏死、夏生秋死，活不过一年，不知道春秋，这就叫短寿。楚国的南方有一种大树叫“冥灵”，以五百年为春，五百年为秋；上古有“大椿”树，以八千年为春，八千年为秋，这就叫长寿。

The most hateful torment for men is to have knowledge of everything but power over nothing.