Computer science is no more about computers than astronomy is about telescopes.

Mathematics is not just a collection of abstract theories, but a language that describes the universe.

The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.

人生没有白走的路，每一步都算数。

"The past is a foreign country; they do things differently there."

唯一真正安全的系统是关闭的，浇筑在混凝土块中，并密封在有武装警卫的铅衬房间中——即便如此，我仍有疑虑。

Anything real begins with the fiction of what could be. Imagination is therefore the most potent force in the universe， and a skill you can get better at. It’s the one skill in life that benefits from ignoring what everyone else knows.

一个常见的经验是，一个晚上难以解决的问题在睡眠委员会工作后，在早上得到了解决。