Memory is a slippery thing, always shifting and reshaping itself.
记忆是滑溜的东西，总是在不断变化和重塑。
We say of some things that they can't be forgiven, or that we will never forgive ourselves. But we do—we do it all the time.
不要把事实告诉不值得的人。
The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.
可持续发展不仅是一种趋势，更是我们对未来的责任。
一句话，先是太胆小，明知错的事却不敢不做；后来也还是太胆小，明知对的事却不敢去做。