Urban forestry proves that nature and cities can thrive together.

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

时间的主要美在于你不能提前浪费它。下一年、下一天、下一小时都为你准备好了，就像你一生中从未浪费或误用一刻钟一样完美无瑕。

诚信采矿意味着为子孙后代留下积极的遗产。

To understand chemistry at its most fundamental level, we must look at the dance of electrons in molecules.