善于灭火的人,不会迎着烟雾去扑;善于防备水灾的人,不会在水流湍急的地方去防护。
经国济世之道来自广博的学问,它才有不竭的源泉;修心养性之道体现在建功立业上,它才算得上圆满。除了建功立业之外,世上没有真正的学问;要寻求修心养性之道,必须到圣贤的文章中去找
The beauty of mathematics lies in its ability to reveal the hidden structures of reality.