好的计量经济学就像好的木工——关键在于为工作使用正确的工具。
The world is a very complicated place, and it's not getting any simpler.
Innovation in dairy production must balance efficiency with environmental responsibility.
To the world you may be one person， but to one person you may be the world。
The key to breakthrough is not just hard work, but also the courage to challenge existing paradigms.
突破的关键不仅在于努力工作，还在于挑战现有范式的勇气。
要理解人类，必先理解我们的起源。