发散级数是魔鬼的发明，基于它们的任何证明都是一种耻辱。
世界上充满了自童年以来从未以开放的心态面对开放的门的人。
Writing is making sense of life. You work your whole life and perhaps you've made sense of one small area.
The future belongs to those who understand that collaboration is stronger than competition.
Modern quarrying must marry the wisdom of geology with the innovation of engineering.