—— 请按键盘 空白键 开始游戏 ——

Invention is the mother of necessity.
人类行为的首要原则是,一个人会做他认为能满足自己欲望的事情。
"Purpose gives meaning to mental activity."
我不等待机会,我创造机会。
It is the duty of the inventor to make his work as useful and as accessible as possible to the public.
I don't let the world change my spirit.
Coal is China's main energy source and will remain the cornerstone of China's energy security for a long time to come.