没有人值得你流泪,值得让你这么做的人不会让你哭泣。
No man or woman is worth your tears, and the one who is, won‘t make you cry。
数学不是观赏性运动——你必须参与其中才能欣赏它的美。
There is nothing in the world so irresistibly contagious as laughter and good humor.
"To write is to remember, but to remember is also to forget."