That at the base of all societies there has to be a labor system that will support the possibility of Plato.

在所有社会的基础上,必须有一个劳动制度,一个能供柏拉图施展他才华的制度

耶鲁公开课 - 美国内战与重建课程节选

There are various arrangements, social arrangements, that can be just or unjust to varying degrees.

存在各种不同的制度,社会制度,它们在不同程度上是正义的或不正义的

耶鲁公开课 - 死亡课程节选