A real decision is measured by the fact that you’ve taken a new action. If there’s no action, you haven’t truly decided.

简单化的艺术是复杂性的谜题。

Everyone is shy. Other people are waiting for you to introduce yourself to them， they are waiting for you to send them an email， they are waiting for you to ask them on a date. Go ahead.

在年老之后，你会发现自己的双手能解决很多难题。一只手用来帮助自己，另一只用来帮助别人。

广义相对论在某种意义上就是引力场的理论。