A picture book is like a theater where the audience can walk around on stage.

Each Wal-Mart store should reflect the values of its customers and support the vision they hold for their community.

A good mathematician should be both rigorous and imaginative.

跨行业合作是解决全球能源挑战的关键。

The ground for taking ignorance to be restrictive of freedom is that it causes people to make choices they would not have made had they seen what their choices involved.

成功是最好的报复。