证明的优雅与其正确性同样重要。
The elegance of a proof is as important as its correctness.
摧毁资本主义制度的最好方法是破坏货币。
——〈在北京湖广会馆学界欢迎会的演说〉,1912年8月30日
我不是来取悦所有人的。
Critical comments by students should be taken in a friendly spirit, accumulation of material should not stifle the student’s independence.