translation.en: And lastly, perhaps most importantly, cities, with the incredible wealth of relations that they enable, could be the ideal places for human happiness to flourish.
translation.zh: 最后一点，也可能是最重要的一点， 城市，因其产生的令人难以置信的 人际关系方面的财富， 可以是人类幸福蓬勃发展的理想场所。