We cannot change anything until we accept it.
除非我们接受它，否则我们无法改变任何事物。
我们教授一门学科不是为了培养关于该学科的小型活图书馆，而是让学生自己学会数学思考。
成功的最好方法是从错误中学习。
I can't understand why people are frightened of new ideas. I'm frightened of the old ones.
"The stage is where the dead speak to the living."