Making something variable is easy. Controlling duration of constancy is the trick.

Success requires persistence, the ability to not give up in the face of failure, and to learn from that failure.

养儿子不教育就像养了一头蠢驴一样；养女儿不教育的话就像养了一头猪。

我尝试将每个项目都当作我的第一个项目来处理。