历史不仅仅是发生了什么，还包括人们对此的想法和感受。

Small actions, multiplied by millions, can transform the world.

Libraries were full of ideas—perhaps the most dangerous and powerful of all weapons.

For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

创新不仅仅是创造新产品，而是重新构想可能性。

城市是一个活的有机体，不断演变。