译文：一句话不小心就会招致祸患，一件事不小心就会玷污名节。赏析：口无遮拦的人迟早会给自己带来祸患，行为不检点之人更会玷污自己的名节。我们的一言一行不仅关乎名节，更关乎性命，所以，我们要谨言慎行。

在理论物理学中，近似的艺术往往比精确解更重要。

人生是连续的选择。

"You must be the change you wish to see in the world."

Psychology must bridge the gap between theory and practical life.

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.