—— 请按键盘 空白键 开始游戏 ——

The power of abstraction is that it allows us to ignore details that are not relevant to the task at hand.
Mathematics is the science of order and patterns, and it is this order that allows us to understand the world around us.
建筑是一种挑战,是对自我的挑战。
The world is all the richer for having a devil in it, so long as we keep our foot upon his neck.