Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The soil remembers what we forget: respect it, and it will repay generations.
解读：一次性快乐稍纵即逝，如短暂刺激；可重复的快乐源于内心充实、自我成长，更值得投入精力，引导追求深度、持久快乐。