—— 请按键盘 空白键 开始游戏 ——

The most important property of a program is whether it accomplishes the intention of its user.
Success is not an entitlement. It has to be earned.
Learning consists in the modification of certain mediating processes which operate between the stimulus and the response.
故事是有生命的东西;它随着每一次讲述而生长。