世界历史可以这样总结：强国总行不义。等到他们醒悟了，他们不已经不再强了。

The future belongs to those who are willing to adapt and evolve.

用户思维比流量思维更重要。

You cannot teach a man anything, you can only help him to find it for himself.

设计实验的最佳时间是在你完成它之后。