—— 请按键盘 空白键 开始游戏 ——

The essence of mathematics lies in its freedom.
Un libro es un diálogo infinito entre el autor y el lector.
Greatness is not about being the best, but bringing out the best in others.
The stock market is filled with individuals who know the price of everything, but the value of nothing.
始终保持你的刀锋利,你的智慧更锋利,你的精神最锋利。