Economic research should aim to inform real-world decision-making.

译文 ：做学问的人，只要事事留心认真、一丝不苟，德行、学业的进步就会像涓涓流水一样不会终止。

We Germans will never get rid of Hitler. He is like a birthmark on our face.

Data are profoundly dumb; they tell you nothing about causes and effects.