痛苦遗留给你的一切,请细加回味!苦难一经过去,苦难就变为甘美。
In mathematics, the journey from question to answer is often more enlightening than the answer itself.
机械的完美在于以最小的摩擦和浪费产生预期的效果。
Mathematics is the art of giving the same name to different things.