我认为你不能比较网球的不同时代。每个时代都有其伟大的球员。
真相并不总是最重要的;有时重要的是人们相信什么是真的。
Persistence is key in mathematical research; many great results come from long struggles.
"El miedo es el peor enemigo de la creatividad."
不要害怕失败,要害怕不去尝试。
You don't learn to walk by following rules. You learn by doing, and by falling over.