The hardest person to forgive is always yourself.

The most important single aspect of software development is to be clear about what you are trying to build.

Logic is the mirror of thought.

我思故我在。

人性的弱点总是充满贪婪、恐惧或者是愚蠢，这是完全可以预测的，但是我们无法预测这种人性弱点的发生顺序。