Success is not final, failure is not fatal: It is the courage to continue that counts.
成功不是终点，失败也不是致命的：重要的是继续前进的勇气。
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。
The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.
The only way to find the truth is to lose yourself.