悲伤不是一条线，让你无限远离失去。它是一个圆，你会一次又一次回到同一个地方。
数学的历史是人类心灵独创性和创造力的证明。
If you're lonely when you're alone，you're in bad pany。
A building must be rooted in the ground but open to the sky.
The only way to do great work is to love what you do.
