Invited by NTQ to review two recent books on performance studies – Jon McKenzie's Perform or Else: from Discipline to Performance and Richard Schechners's Performance Studies: an Introduction – Baz Kershaw found himself in a Catch-22 situation: given the vast territories they claimed for the discipline, how could a short survey do them justice? Yet more perplexing, how might a close analysis of their diffusive visions proceed, even in a longer essay? Struck by their common use of air disasters as denouements and their respective publication dates just six months before and after 9/11, he uses these and other homologies as a route into exploring the ethical and political implications for the new century of the arguments employed by the two texts. Drawing on the philosophical innovation of ‘dialetheism’, which deploys paradox to stretch the bounds of classical logic, he also considers the books' differences and suggests a kind of de-territorialized reconciliation through his notion of a ‘paradoxology’ of performance. He offers the resulting search for depth in surfaces, beginnings in endings, presence in absences, and truth in contradictions as an exemplification of philosopher Po-chang's aphorism about the quest for Buddha's nature: ‘It’s much like riding an ox in search of the ox.’ Baz Kershaw holds the Chair of Drama at Bristol University. His many publications include Engineers of the Imagination (Methuen, 1990), The Politics of Performance (Routledge, 1992), and The Radical in Performance (Routledge, 1999), and he is editor of The Cambridge History of British Theatre: Volume 3, Since 1895 (CUP, 2005). He is also Director of the AHRC-funded major research project PARIP – Practice as Research in Performance.