The divergent series are the invention of the devil, and it is a shame to base any proof upon them.
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。
预测未来的最好方法就是去创造它。
The art of living lies less in eliminating our troubles than in growing with them.
世界是一本书，不旅行的人只读了一页。
预测未来的最好方法就是创造未来。