经济学家的角色既是科学家，又是工程师。
The role of the economist is part scientist, part engineer.
Every breakthrough starts with a question, and every question is a step toward the unknown.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
The best way to live is to love unconditionally.
我认为应对生活的唯一方式是找到你热爱的事情并全心全意地去做。