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。
We should learn from international leaders while developing our own path.
The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.
最好的肥料是农民的影子（意指农民的辛勤劳动）。
The mind is not a passive mirror of the world but an active participant in constructing reality.
自由不过是一个变得更好的机会。
The only interesting answers are those that destroy the questions.