Happiness is not the belief that we don't need to change; it is the realization that we can.

我让我的灵魂穿越无形，去拼读那来世的信：不久后我的灵魂回到我身边，回答说“我自己就是天堂和地狱。”

The internet has changed the way information is disseminated, but human nature has never changed.

Science is about understanding the world, and engineering is about changing it.

It is not the task of history to judge, but to understand.