Lawmaking is - paradigmatically - a type of speech act: people make law by saying things. It is natural to think, therefore, that the content of the law is determined by what lawmakers communicate. However, it is sometimes vague what content they communicate, and even when it is clear, the content itself is sometimes vague. In this monograph, Hrafn Asgeirsson examines the nature and consequences of these two linguistic sources of indeterminacy in the law. The aim is to give plausible answers to three related questions: In virtue of what is the law vague? What might be good about vague law?...