—— 请按键盘 空白键 开始游戏 ——

每个数学问题都有解答;挑战在于找到它。
Every mathematical problem has a solution; the challenge is finding it.
The secret of joy in work is contained in one word - excellence. To know how to do something well is to enjoy it.
The work of art is already within the block of marble. I just have to chisel away the superfluous material.