天下无数百年不弊之法，无穷极不变之法。
天下没有几百年不出现弊端的制度，也没有永远不变的法律
如果你没有得到奇迹，那就成为一个奇迹。
Inspiration can come from the most unexpected places.
Nothing’s lost forever. In this world, there’s a kind of painful progress. Longing for what we’ve left behind, and dreaming ahead.
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.