The history of mathematics is a testament to the ingenuity and creativity of the human mind.
I don’t think you should ever feel like you’ve achieved everything.
用右手画圆形,左手画方形,不能同时画成
我不觉得有义务相信,那位赋予我们感官、理性和智力的上帝,会希望我们放弃使用它们。