英国女王伊丽莎白二世来华访问时想见他，他说
Gain wisdom through reflection.
In mining, you don't find success by digging in the same hole forever - innovation is our lifeline.
我不想成为大师。我想成为学生。
Sustainability isn't an option; it's a necessity for the future of our planet.
不要让恐惧阻止你追求梦想。
Our legacy will be defined by how we treat the forests today.
杀死一个幽灵比杀死一个现实要困难得多。