 The Frege-Geach challenge to the emotivist is thus to answer the following question: how can you give an emotivist account of the occurrence of moral sentences in ‘unasserted contexts’—such as the antecedents of conditionals—without jeopardising the intuitively valid patterns of inference in which those sentences figure? Philosophers wishing to develop an expressivistic alternative to moral realism have expended a great deal of energy and ingenuity in devising responses to this challenge. See in particular Blackburn’s development of ‘quasi-realism’, in his (1984) Chs 5 and 6, (1993) Ch.10, (1998) Ch.3 and Gibbard’s ‘norm-expressivism’, in his (1990) Ch.5, and further refined in his (2003). For criticism see Hale (1993) and (2002), and Kölbel (2002) Ch.4. For an overview, see Schroeder (2008) and Miller (2013a), Chs 4 and 5. For very useful surveys of recent work on expressivism, see Schroeder (2009) and Sinclair (2009).