Well, the first rule is that you can’t really know anything if you just remember isolated facts and try and bang ’em back. If the facts don’t hang together on a latticework of theory, you don’t have them in a usable form.

城市就像一张巨大的重写羊皮纸，几个世纪以来被反复书写和重写。

The moment you stop believing, you're already defeated.