唯一能让你强大的是你自己的灵魂。
The only way to learn mathematics is to do mathematics.
The truth is rarely pure and never simple.
"Every child deserves to see themselves in a book."
理性是感性的镜子。
追求数学知识是一段永无止境的旅程，充满了无尽的好奇和惊奇。
