Science thrives on doubt and skepticism.

乳制品行业要发展，必须走高质量发展之路，不能只追求规模。

If you want to be successful, you have to be willing to make tough decisions.

The older I get, the more I realize how little I know.

Fearless is not the absence of fear. It’s not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.

道德情操论是政治经济学理论的基础。