测试程序的最好方法是测试它。

There's not a liberal America and a conservative America - there's the United States of America.

The greatest stories are those that challenge us to grow.

【解释】鱼是我所想要的，熊掌也是我所想要的，如果这两种东西不能同时得到，那么我就只好放弃鱼而选取熊掌了。