This book offers the first critical study of The Logic of Sense, Gilles Deleuze's most important work on language and ethics, as well as the main source for his vital philosophy of the event. Deleuze's philosophy has always promised a revolution in ethical theories and in our understanding of the relation between language, thought and action. This book develops a critical reading of Deleuze's work in order to convey the potential and risks of his new approaches to questions of how to live an intense life in response to the excitement and danger of events. This interpretation covers all aspects of Deleuze's book, including engagements with phenomenology, with analytic philosophy of language, with stoicism, with literary theory and with psychoanalysis. Its aim is to open new debates and develop current ones around Deleuze's work in philosophy, politics, literature, linguistics and sociology.