It is silly not to hope, he thought.
他认为，人不抱希望是很傻的。
The future belongs to those who see opportunities where others see challenges.
一本好的图画书就像一部无声电影；它不用文字就能讲述一个故事。
宏观经济政策的目标是创造一个稳定的环境，使个人能够制定长期计划。
世界是一切事实的总和。
The labor market is constantly evolving, and our models should reflect that.
数学家的工作永无止境；总有新的问题要问，新的谜题要解。