免费的疫苗比昂贵的治疗更有价值，但更难推广。

Supply chain is the core competitiveness of e-commerce, period.

心灵是一个不断适应环境的动态系统。

I don't listen to what people say. I just go out there and perform.

You have to be willing to take risks. If you’re not, you’re not going to make money.

物理学的创新往往来自于以新的方式看待老问题。