Lagrange believed that a mathematician did not thoroughly understand his work until he had made it so clear that he could go out and explain it to the first person he met on the street.
Lagrange believed that a mathematician did not thoroughly understand his work until he had made it so clear that he could go out and explain it to the first person he met on the street.
拉格朗日认为，一个数学家，只有当他走出去，对他在街上遇到的第一个人清楚地解释自己的工作时，他才算完全理解了自己的工作。