当空间被生活占据时，它就变成了场所

Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.

我不需要完美，只需要比昨天更好。

数学不知道种族或地理边界；对于数学来说，文化世界是一个国家。

I'm not a rapper, I'm a revolution.