The ability to imagine counterfactuals is what distinguishes humans from machines.

自由是生命的呼吸。

追求科学不仅仅是追求理解，更是追求奇迹。

"I think it should be called a lie because a pig is not like a day and people do not have skeletons in their cupboards."

环境是一个长期问题，需要长期承诺。