Outside law we often judge an action to be wrongful in virtue of being disproportionate. This paper aims to develop a moral account of proportionality as it figures outside law, with a view to shed light on legal doctrines that employ proportionality reasoning. The understanding of proportionality as a balancing act between harms and goods, popular amongst lawyers, lacks a moral dimension capable of justifying why disproportionate action is wrong. The paper defends instead a reason-based approach. It argues that the moral dimension of proportionality lies in the idea of obligations of role: an action is proportionate when it fits the reasons that pertain to the normative role of the acting agent, properly understood. Proportionality as fittingness captures better not only the use of proportionality outside law but also judicial outcomes under proportionality reasoning.

中文翻译：

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作为适合的比例：比例的道德维度*

在法律之外，我们经常因为不相称而判断一项行为是错误的。本文旨在对法律之外的比例性进行道德解释，以期阐明采用比例性推理的法律学说。律师中普遍将相称性理解为损害与利益之间的平衡行为，但缺乏能够证明不相称行为为何是错误的道德维度。这篇论文反而为一种基于原因的方法辩护。它认为，相称性的道德维度在于角色义务的概念：当一个行动符合与行为主体的规范角色有关的原因时，它就是相称的，正确理解。