Robertson, Crimes against humanity, 90; see "analytical jurisprudence" for extensive debate on what law is; in The Concept of Law Hart argued law is a "system of rules" (Campbell, The Contribution of Legal Studies, 184); Austin said law was "the command of a sovereign, backed by the threat of a sanction" (Bix, John Austin); Dworkin describes law as an "interpretive concept" to achieve justice (Dworkin, Law's Empire, 410); and Raz argues law is an "authority" to mediate people's interests (Raz, The Authority of Law, 3–36).
