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Deleuze uses the preface to relate the work to other texts. He describes his philosophical motivation as "a generalized anti-Hegelianism" and notes that the forces of difference and repetition can serve as conceptual substitutes for identity and negation in Hegel. The importance of this terminological change is that difference and repetition are both positive forces with unpredictable effects. Deleuze suggests that, unlike Hegel, he creates concepts out of a joyful and creative logic that resists the dualism of dialectic: "I make, remake and unmake my concepts along a moving horizon, from an always decentered centre, from an always displaced periphery which repeats and differentiates them."
