自然和历史是地理知识的两个重要来源。

自然界中每年的痛苦总量超出了所有体面的思考。在我写这句话的一分钟内，成千上万的动物被活生生地吃掉，许多其他动物在逃命，因恐惧而呜咽，其他动物则被寄生虫从内部慢慢吞噬，成千上万的动物因饥饿、口渴和疾病而死亡。

Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.

世界上最伟大的教育就是观察大师们工作。

Anything real begins with the fiction of what could be. Imagination is therefore the most potent force in the universe， and a skill you can get better at. It’s the one skill in life that benefits from ignoring what everyone else knows.

I used to walk down the street like I was a star... I want people to walk around delusional about how great they can be - and then to fight so hard for it every day that the lie becomes the truth.