In darkness, we learn to seek light; in despair, we learn to seek hope.

译文：我衰老得太厉害了!感慨平生交游的朋友渐渐零落，如今还剩下几个?白发空自垂下三千丈，对人间万事只能付之一笑。试问什么事物能让我真正欢喜?

The history of the world is the history of the few.

The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.

成功来自于专注于你能控制的事情，放下你不能控制的。

领导是一种孤独的工作。如果你不能承受孤独，那么你就不适合领导。

When [competitors are] in the shower in the morning, they're thinking about how they're going to get ahead of one of their top competitors. Here in the shower, we're thinking about how we are going to invent something on behalf of a customer.