种树的最佳时间是20年前，其次是现在。

二十世纪自由主义与极权主义之间的伟大斗争以前者的胜利告终。

选自汉·桓宽《盐铁论·申韩》。从事治学的人，需要广泛的阅读，并且需要从中吸取正确、有用的内容。

勇敢地去尝试新事物，即使一开始做得不好。

我不等待心情。如果你那样做，你将一事无成。你的头脑必须知道它必须开始工作。

People ask me how I make music. I tell them I just step into it. It’s like stepping into a river and joining the flow. Every moment in the river has its song.

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.