证明是一种用于使他人相信数学陈述为真的工具。
A proof is a device for convincing someone else that a mathematical statement is true.
"The truth is rarely pure and never simple."
Twenty years from now you will be more disappointed by the things that you didn’t do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.
我不是天才,我只是比别人更努力。
(均平的状态下,水)保有内蕴,而外部毫无所动。
快乐不是一件自我存在的东西,它仅是与其他不快乐事情的一个相对比照,这就是快乐的整个情况。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.