出自汉·桓宽《盐铁论·申韩》。善于治理国家的人,一发现弊病就立即补救,一看到漏洞就立即堵塞。
The beauty of mathematics only shows itself to more patient followers.
On the path of science, failure and success are equally important; they are both steps towards truth.
"The essence of mathematics lies in its freedom."