数学不是观赏性运动，你必须参与其中才能理解。

I like criticism. It makes you strong.

To get what you want, you have to deserve what you want.That world is not yet a crazy enough place to reward a whole bunch of people.

最大的幸福是知道不幸的根源。

规模和价值效应在不同市场和时间段普遍存在，但其幅度可能有显著差异。