永远不要让成功冲昏头脑,也不要让失败打击心灵。
Never let success get to your head, or failure to your heart.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
过去从未死去,它甚至还未过去。
抽象的目的不是含糊不清,而是创建一个新的语义层次,在这个层次上可以绝对精确。
The only limit to our realization of tomorrow is our doubts of today.
出自《论语·宪问篇》。遇到事情,不去抱怨上天,也不要去责备别人,应当能够扪心自问,好好地反省自己。