No society can surely be flourishing and happy， of which the far greater part of the members are poor and miserable.
没有一个社会能够真正繁荣和幸福，其中大多数成员都贫困和痛苦。
Rule of 7 in research. You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know， ask them who you should ask next， and so on down the line. If you are willing to go to the 7th source， you’ll almost always get your answer.