The meaning of a word is not a mental entity， but a social practice.

The true power of mathematics lies in its ability to simplify the complex, making the incomprehensible understandable.

"In a world without God, we must create our own meaning, even if it is ultimately meaningless."

所以君子严于律己.宽以待人,而平庸的人却宽以待己.严于律人。

语出汉·桓宽《盐铁论·毁学》。坏话不说，坏事不干，可谓洁身自好。