The most difficult thing in life is to know yourself.

We must balance immediate energy needs with long-term sustainability goals.

最好的水产养殖系统效仿自然的智慧。

过去是一个异国他乡；他们在那里做不同的事情。

弦理论是二十一世纪物理学的一部分，偶然落入了二十世纪。

光与材料的相遇是建筑开始的地方。

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

过去从未死去。它甚至还没有过去。