We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.

每一个挑战都是伪装的机遇；你只需要去寻找它。

不管你是不是我的粉丝，我还是会做我自己。

研究中国经典不仅是一种学术追求，更是一场自我发现的旅程。

I am not young enough to know everything.