Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
【释义】松柏在严寒的岁末最后凋谢,雄鸡在风雨交加之时依然啼鸣不止。
翻译:道德高尚的人,与地位比自己高的人交往,不奉承讨好;与地位比自己低的人交往,不轻慢高傲。