Dan Sperber & Deirdre Wilson. 2008. A deflationary account of metaphor. In R. Gibbs (ed.) Handbook of Metaphor and Thought. Cambridge UP. pp. 84-105

Abstract: On the relevance-theoretic approach outlined in this paper, linguistic metaphors are not a natural kind, and “metaphor” is not a theoretically important notion in the study of verbal communication. Metaphorical interpretations are arrived at in exactly the same way as literal, loose and hyperbolic interpretations: there is no mechanism specific to metaphors, and no interesting generalisation that applies only to them. In this paper, we defend this approach in detail by showing how the same inferential procedure applies to utterances at both ends of the literal-loose-metaphorical continuum, and how both literal and metaphorical utterances may create poetic effects