The idea of coercion serves two distinct moral functions and, correspondingly, consists of two overlapping but distinct concepts: one that serves to mark out a type of moral wrong, and one that serves to mark out a type of moral bad. The distinction between these two concepts holds the key to resolving a number of problems in moral and political philosophy, including questions about the coerciveness of the state and questions about the coerciveness of various kinds of economic transaction.

中文翻译：

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强制：错与错

强制的概念服务于两种不同的道德功能，相应地，由两个重叠但不同的概念组成：一个用于标记一种道德错误，一个用于标记一种道德错误。这两个概念之间的区别是解决道德和政治哲学中的许多问题的关键，包括有关国家强制性问题和各种经济交易强制性问题的问题。