Natural gas will play a critical role as a bridge fuel, but our eyes must remain fixed on the ultimate goal of net-zero emissions.

一个人越是激进，就越能完全地进入现实，从而更好地了解它，进而改变它。

The human brain is a complex, self-organizing system.

Every role I take on is a new adventure, a new challenge.

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

The real challenge in computer science is not to write programs, but to understand the nature of computation.