成为一个艺术家就是要不断地质疑。

The future of liberal democracy depends on its ability to address the challenges of inequality and political polarization.

Success is not final, failure is not fatal: It is the courage to continue that counts.

The thing that we are trying to do at Facebook, is just help people connect and communicate more efficiently.

生活的意义在于产生影响，而不是赚取收入。