—— 请按键盘 空白键 开始游戏 ——

Mathematical reasoning may be regarded rather schematically as the exercise of a combination of two facilities, which we may call intuition and ingenuity.
数学推理可以相当系统地看作是对两种能力的结合运用,我们可以称之为直觉和独创性。
The concept of progress must be grounded in the idea of catastrophe.
The truth is, every writer creates his own precursors.