—— 请按键盘 空白键 开始游戏 ——

证明的严谨性将数学与所有其他科学区分开来。
Rigor in proof is what separates mathematics from all other sciences.
One isn't born one's self. One is born with mass of expectations, a mass of other people's ideas.
Aquaculture isn't an alternative to traditional fishing; it's a necessary evolution.