空气中弥漫着一种悲伤，但这种悲伤让你感觉活着。
There’s a kind of sadness in the air, but it’s a sadness that makes you feel alive.
没有革命的理论，就不会有革命的运动。
The best way to predict the future is to implement it.
数学之美只会向更有耐心的追随者展现。
Love is not a possession, it's an offering.
我不需要理由去快乐。
Words have the power to heal, to destroy, and to create.