人类需要悲伤,正如需要欢乐一样。
I'm the reason your preacher can't preach.
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
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。 
The best way to predict the future is to create it.