Quality is not a choice; it is a requirement.

We want to build technology that everybody loves using, and that affects everyone. We want to create beautiful, intuitive services and technologies that are so incredibly useful that people use them twice a day. Like they use a toothbrush. There aren’t that many things people use twice a day.

我们需要将贫困视为一系列相互关联的问题，而不是一个单一的问题，这些问题需要量身定制的解决方案。

最大的智慧是认识到自己的无知。

刀展示了锋利，而试刀砍头的人将遭到不祥。