所以,国家的钱财不足以来应付饥荒,救济孤儿寡妇,这样,国家就贫困,百姓就难于治理。 
A mathematician's work is mostly a solitary pursuit, but it builds on the work of many others.
如果你不主导你的业务,你就会被淘汰出局。
I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.