The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
言语总是列举商汤与周文王，而行为却比作狗与猪，可悲啊！
家中的事情，尽可外传，就可了解君子的家法是如何的端正无瑕；亲近的人，都恭敬谨肃，就可了解君子对自身要求多么严格正派。
So I guess both Susan Boyle and this vegetable vendor in Shanghai belonged to otherness. They were the least expected to be successful in the business called entertainment, yet their courage and talent brought them through. And a show and a platform gave them the stage to realize their dreams.
In times of change, the learners inherit the earth, while the learned find themselves beautifully equipped to deal with a world that no longer exists.《Steel and Strategy》