你不能在空荡荡的肚子和人类的苦难上建立一个和平的世界。
The most important actions are never comfortable.
I don't want to be better than anyone else, I just want to be better than myself.
Mathematics is a collaborative endeavor. No one does it alone.
对我们森林最大的威胁不是伐木,而是漠不关心。
能够使我们成为现在的我们的唯一因素将是对类似我们的东西的感知。