The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
"The only thing that is eternal is the now."
世界是一本书,不旅行的人只读了一页。
幸福不是一直得到你想要的,而是爱你所拥有的并为此感恩。
The stream of thought is a stream of survival.
事实是,我们都以我们甚至无法理解的方式相互联系。