—— 请按键盘 空白键 开始游戏 ——

In the state of nature, profit is the measure of right.
The truth is, art requires of its practitioners not talent alone, but a certain kind of temperament.
The interplay between theory and observation is what advances astrophysics.
每本书都是一次旅程,每次旅程都可能成为一本书。