The statesman， who should attempt to direct private people in what manner they ought to employ their capitals， would not only load himself with a most unnecessary attention but assume an authority which could safely be trusted， not only to no single person， but to no council or senate whatever， and which would nowhere be so dangerous as in the hands of a man who had folly and presumption enough to fancy himself fit to exercise it.

我唱歌不是为了完美，我唱歌是为了活着。

接受不确定性可能是应对复杂世界的最佳策略。

元素可以分为具有相似性质的组。

出自先秦《荀子·大略》。说得到，也能做得到，这种人就是国家之宝。说明言行一致、身体力行的人才是治国安邦的有益人才。