美丽的东西终将毁灭。
The true teacher defends his pupils against his own personal influence.
Life is not what one lived, but what one remembers and how one remembers it in order to recount it.
科学家研究自然并非因为它有用;他研究它是因为他从中获得乐趣,而他从中获得乐趣是因为它是美丽的。
永远不要停止学习;世界在不断发展,我们也应该如此。