Deleuze and Lacan indeed had significant philosophical differences, partly due to Lacan's engagement with Hegelian concepts. Here's a detailed explanation:
1. **Lacan's Hegelian Influence**:
- Lacan's work, particularly his development of psychoanalytic theory, is influenced by Hegelian dialectics. For example, Lacan's concept of the "mirror stage" and the development of the subject involve a dialectical process of recognition and misrecognition, echoing Hegel's master-slave dialectic.
2. **Deleuze's Critique of Psychoanalysis**:
- Deleuze, along with Félix Guattari, critiques psychoanalysis extensively in works like "Anti-Oedipus." They argue that psychoanalysis, including Lacan's version, imposes an Oedipal structure and a representational framework on the unconscious, which Deleuze and Guattari see as fundamentally reductive and oppressive. They favor a more fluid, desiring-production model of the unconscious, which contrasts sharply with Lacan's structured and symbolic approach.
3. **Difference vs. Dialectics**:
- Deleuze's philosophy of difference directly opposes the Hegelian dialectic that underpins much of Lacan's thought. Where Lacan employs a dialectical process in understanding the psyche and subject formation, Deleuze rejects such a process in favor of a multiplicity and a non-hierarchical, rhizomatic approach.
4. **Structure vs. Flow**:
- Lacan's work is heavily structured, with a strong emphasis on linguistic structures and the Symbolic order. Deleuze, however, resists structuralism, advocating instead for a philosophy that emphasizes flows, becomings, and the deterritorialization of established structures. This difference reflects their divergent philosophical commitments.
5. **Affirmation vs. Lack**:
- Lacan's psychoanalytic theory involves concepts like "lack" and "desire as lack," influenced by Hegelian negativity. Deleuze, in contrast, emphasizes affirmation and productive desire, rejecting the notion that desire is born out of lack.
While Deleuze respected Lacan's intellectual contributions and occasionally found some of Lacan's insights useful, he fundamentally disagreed with the Hegelian underpinnings and the broader structuralist framework that Lacan operated within. Thus, Deleuze would not agree with Lacan precisely because of Lacan's heavy Hegelian influence. Instead, Deleuze sought to develop a philosophical approach that moved beyond the limitations he perceived in Hegelian dialectics and, by extension, in Lacanian psychoanalysis.