The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.

Literature is the art of giving form to the formless.

When you work on hard problems long enough, you start to see connections where others see only confusion.

成功的关键是走进商店，听听员工们怎么说。让每个人都参与进来是非常重要的。我们最好的想法来自店员和库存员。