奥林匹克运动会是为了世界，所有国家都必须被接纳参加。
The Olympic Games are for the world and all nations must be admitted to them.
A picture book is like a theater where the audience can walk around on stage.
The most beautiful arrangement is a pile of things poured out at random.
不要把事实告诉不值得的人。
物理学不仅仅是解决问题，它是关于理解现实的本质。