To live is to be marked. To live is to change, to acquire the words of a story, and that is the only celebration we mortals really know.
He who refuses to do arithmetic is doomed to talk nonsense.
相关系数的可能误差不是可以从第一原理推导出来的东西,而是必须通过经验找到的。
I'm not a person who likes to be behind.