I have always believed that if you want to achieve anything in life, you have to work for it.
生活是一种人人须学而无人能教的艺术。
你无法预先把点点滴滴串连起来,只有在回顾时才能明白它们是如何联系在一起的。
In the world of mathematics, every question leads to another, creating an endless web of knowledge that connects all areas of science.