Sometimes rights are taken to describe concrete, bottom-line entitlements, sometimes a kind of ground of such entitlements. I suggest that this difference reflects not so much disagreement or uncertainty as to the nature of rights as different applications and senses of the term ‘right’, each expressing a different idea or concept. Much work on rights is compromised by a failure to distinguish these concepts of a right, nowhere more so than in private law, where it accounts for difficulties lawyers have faced when seeking to distinguish personal (in personam) and proprietary (in rem) rights.

中文翻译：

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权利的三个概念，财产的两个概念

有时权利被用来描述具体的、底线的权利，有时是这种权利的一种基础。我认为，这种差异所反映的与其说是对权利性质的分歧或不确定性，不如说是“权利”一词的不同应用和含义，每一种都表达了不同的想法或概念。很多关于权利的工作都因未能区分这些权利概念而受到影响，尤其是在私法中，这说明了律师在寻求区分个人（对人）和所有权（对物）权利时所面临的困难。