The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
尝试一种方法是常识。如果失败了,坦率地承认并尝试另一种方法。但最重要的是,尝试一些事情。
I'm not a smart man, but I know what love is.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.