哪怕是磨没了头发，宁可死也不会旋转前进的脚步，为的是全天下人的利益。

写程序要像写一封信一样小心。

A writer must have the courage to confront the uncomfortable truths of their time.

Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom.

【译文】 孔子说：“知道学习不如喜欢学习，喜欢学习不如以学习为快乐。”