Deciding what not to do is as important as deciding what to do.

一本伟大的书是那种让你改变的书，它给你带来对生活的新视角和对人类状况的更深理解。

The PAC learning framework provides a formal way to quantify the learnability of a concept class.

旅行就是生活。

真相总是复杂的，而且很少是纯粹的。

挑战在于在虚构中找到真相。