我不相信后悔，我相信从中吸取教训。

Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.

"Writing is a way to talk without being interrupted."

好的教师不是仅仅传授知识，而是激发学生自己去探索和发现

热爱真理，但宽恕错误。