——1997年9月26日在美国加州圣地亚哥市发表演讲

教育体系是以感官基础,以思考为过程,以自由为目的。

【译文】兔子死尽猎犬被烹，敌国灭亡谋臣遭殃。

Climate change isn't a distant threat - it's reshaping our forests today.

When I was in college， I wanted to be involved in things that would change the world.

真相很少是纯粹的，也从不简单。