要理解递归，首先必须理解递归。
To understand recursion, one must first understand recursion.
We need to design policies that work with human psychology, not against it.
Sustainability is not just about protecting the environment, it's about creating a system that works for everyone.
勇敢是美德之首。
The key to successful market design is anticipating how participants will behave under different rules.
The best investment we can make is in the health of future generations.