人们会为自己相信的东西而战。

成功不是幸福的关键。幸福是成功的关键。如果你热爱你所做的事情，你就会成功。

One must not always think that feeling is everything. Art is nothing without form.

The concrete artist strives to express the spiritual in the most precise and objective form possible.

Natural experiments are a powerful tool for understanding causal relationships in the real world.

理性不在于正确，而在于信念与行动的一致性。