因果推断的本质是超越数据，询问如果我们干预会发生什么。
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.
2000年：贝索斯致股东信《即使在最残酷的时期，也将努力把公司打造更具“重量”》
凡是陽性必刚强，刚强一定光明，光明则容易了解。凡是陰性必柔弱，柔弱一定陰暗，陰暗则难以预测。
现在王公大人从事于音乐，损害夺取人民的衣食之资，仅从命人听乐这一点来看就已经很厉害了。
Love is not a profession, it's a condition.
Great brands are built on integrity and delivering on promises.
"We are all searching for something, and sometimes, what we find is not what we expected."
逻辑是思考的镜子。
The secret of change is to focus all of your energy not on fighting the old, but on building the new.
穷人常常被迫做出没有人应该做出的选择。