语出（南宋）崔敦礼《刍言》。自以为聪明的人，其实并不聪明；自以为能干的人，其实并不能干。

"The past is never dead. It's not even past."

Sustainable mining isn't an option anymore - it's our responsibility to future generations.

"The past is always tense, the future perfect."

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."