释义：君子在面对挫折、困难的时候，应该反躬自问，修养品德。蹇（jiǎn），多指行动迟缓、困苦、不顺利的意思。

写作就是见证人类的状况。

The only difference between a rat and a human is that a rat learns from experience.

What can be said at all can be said clearly; and whereof one cannot speak thereof one must be silent.