Play is the language of childhood, and books should speak that language too.

Prices are important not because money is considered paramount but because prices are a fast and effective conveyor of information through a vast society in which fragmented knowledge must be coordinated.

能源格局正在发生变化，我们必须随之改变以保持相关性。

The only way to do great work is to love what you do.

在量子力学中，观察的行为会改变被观察的系统。