The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.

If you don't take risks, you can't grow.

爱是唯一能填补人类心灵永恒空虚的东西。

景观不仅仅是其组成部分的总和，而是一个复杂系统，其中每个元素都是相互关联的。

最大的自由是选择自己思想的自由。

The circular economy isn't just good for the planet - it's good business.