Design without functionality is art, but design with functionality changes lives.

Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.

心理学应关注心灵如何运作以解决实际问题，而不仅仅是其抽象结构。

透明采购不是可选项，而是一种责任。

I think we have a unique culture at Amazon that encourages both risk-taking and long-term thinking.