生存的唯一方法就是互相照顾。

The city is like a great palimpsest, a manuscript that has been written and rewritten over the centuries.

可持续发展不再是可选项，而是我们对后代的责任。

你必须强迫自己考虑反对的论点。尤其是当他们挑战你最喜爱的观点时。