可持续性不是一个流行词，而是全球粮食安全的唯一出路。

Don't let anyone tell you that you can't do something.

The first task is to understand the problem, the second to find a solution, and the third to carry it out.

不过是君主不把它［爱人利人］用在政事上,士大夫也不把它付诸行动罢了。