The essence of mathematics lies in its freedom.

The desire for recognition, the thymotic part of the soul, is what drives human history.

I touched the pain in my chest. It was the place where she had one or two times in my hair.

海洋是生命的摇篮，也是人类未来的希望，我们要像对待母亲一样呵护她。

There is a close connection between the human soul and the natural world; our emotions are intertwined with the external universe.