Stephen Zepke is an independent researcher living in Vienna. He has published numerous essays on philosophy, art and cinema. He is the author of Art as Abstract Machine, Ontology and Aesthetics in Deleuze and Guattari (Routledge, 2005), and co-editor with Simon O'Sullivan of Deleuze and Contemporary Art (Edinburgh University Press, 2010) and Deleuze, Guattari and the Production of the New (Bloomsbury Academic, 2008). Simon O’Sullivan is Professor of Art Theory and Practice in the Department of Visual Cultures at Goldsmith College, London. He is the author of the monographs On the Production of Subjectivity: Five Diagrams of the Finite-Infinite Relation (Palgrave, 2012) and Art Encounters Deleuze and Guattari: Thought Beyond Representation (Palgrave, 2005), and is co-editor (with Henriette Gunkel and Ayesha Hameed) of Futures and Fictions (Repeater, 2017) and (with Stephen Zepke) of both Deleuze, Guattari and the Production of the New (Continuum, 2008) and Deleuze and Contemporary Art (Edinburgh University Press, 2009).