Alittle sincerity is a dangerous thing, and a great deal of it is absolutely fatal.
可持续性不是一种趋势——而是我们对后代的责任。
在无关紧要的事情上，没有什么比其他事情更可取。
Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life.
We don't inherit the land from our ancestors; we borrow it from our children.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
在数学中，旅程与目的地同样重要。
可持续性不是一种选择，而是我们对后代的责任。