没有刻苦钻研的精神，就不能明辨事情的道理；没有专心致志的工作，就不会取得显赫的成绩。
The only power is the power to say no.
"Every poem is a love poem, even when it's about loss."
A clear vision turns obstacles into stepping stones.
The history of mathematics is a history of human thought and progress.