可持续增长的关键是在经济进步和环境责任之间取得平衡。

Every hour, she thinks, someone forges the rings, someone carves the cradle, someone loses the war.

在数学中，旅程和目的地同样重要。

教育不仅仅是达到目的的手段，其本身就是目的。

"Books are the way that we communicate with the dead. The way that we learn lessons from those who are no longer with us, that humanity has built on itself, progressed, made knowledge incremental rather than something that has to be relearned, over and over."

身份是脆弱的东西，容易丢失，难以重获。