The joy of mathematics comes from the moments of clarity when complex things become simple.

质量从来不是偶然的；它始终是智慧努力的结果。

Coal enterprises must enhance their sense of social responsibility and achieve the unity of economic and social benefits.

诗歌是一种抵抗的形式，一种对压迫说不、对自由说是的方式。

别让恐惧决定你的未来。