If a listener nods his head when you're explaining your program, wake him up.

The past is always tense, the future perfect.

Every algorithm tells a story, not just of its own steps, but of the problem it seeks to solve.

Literature is the memory of humanity, and without it, we are lost.

珍贵的宝物容易求得，而真心相待的郎君却难以寻觅

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

【译文】如果不明事理，那么动就不知道往哪里去;如果不动，那么即使明白事理也没有用处。

过去是一个异国；他们在那里做事的方式不同。