This article examines the principle of legality, a principle of statutory interpretation that requires clear statutory words to oust basic common-law norms. The principle is of growing importance in the Supreme Court's public law jurisprudence, yet it has garnered little scholarly attention. This article offers a comprehensive account of the principle, unpacking its core elements and identifying key controversies. The article reveals that lying beyond this apparently straightforward principle is a complex and elaborate jurisprudence, which raises fundamental issues of principle, policy and judicial legitimacy.

中文翻译：

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合法性原则

本文考察了合法性原则，这是一项法定解释原则，需要明确的法定词语来推翻基本的普通法规范。该原则在最高法院的公法判例中越来越重要，但很少引起学术界的关注。本文全面介绍了该原则，揭示了其核心要素并确定了关键争议。文章揭示，在这一看似直截了当的原则之外，还有一个复杂而详尽的判例，它提出了原则、政策和司法合法性等基本问题。