教育系统的墙必须倒塌。教育不应该是特权，这样有钱人的孩子才能学习。
The walls of the educational system must come down. Education should not be a privilege, so the children of those who have money can study.
"I am not a word, I am a language."
Collaboration across borders is essential—no single nation holds all the answers to global food security.
我做过的最有争议的事情就是坚持下来。
Courage is the persistence in the face of fear.