The power of mathematics comes from its ability to abstract and generalize, turning specific problems into universal truths.
追求知识是一场没有终点的旅程,但每一步都带来自己的回报。
有时候最真实的东西反而是你看不见的。
Books make great gifts because they have whole worlds inside of them.
"世界上充满了面带友好的怪物。"