If you think you saw a mouse， you did. And， if there is one， there are more.

The history of life is a history of transformation.

数学的美只对那些更有耐心的追随者展示。

启蒙就是人类脱离自我招致的不成熟状态。

We are all born mad. Some remain so.

法律的概念是复杂的，不仅涉及规则，还涉及原则、政策和标准。