The great enemy of Deleuze’s thought, of course, was the transcendent. In his earliest work, this can be seen in his critique of anything resembling Platonic form or unchanging essences, but also of his critique of the self-identical subject as in the case of Descartes’ cogito.
Deleuze’s thought begins from the position that, on the one hand, all being is becoming and therefore is the result of a production or a process of individuation. In Difference and Repetition he will perpetually emphasize that individuation is not the individual insofar as individuation is the differential process by which the individual is produced. Likewise, he will staunchly oppose any position that begins from an unchanging identity whether in the form of the subject or God, as well as any position that posits invariant and ahistorical forms. Deleuze is, above all, a process philosopher.
However, the transcendental is not the transcendent. Rather, the transcendental, following Kant, refers to a set of conditions thoroughly immanent to being. While it is certainly the case that Kant is one of Deleuze’s philosophical enemies, there is nonetheless a deep Kantian inspiration or influence in Deleuze’s thought. However, Deleuze radicalizes or transforms the Kantian position in three ways...
I would argue that Deleuze and Guattari’s Deleuze’s three synthesis– the syntheses of connection, disjunction, and conjunction –constitute the beginnings of a transcendental analysis. Indeed, these syntheses Kant’s three syntheses of apprehension, reproduction, and recognition in the “A” edition of the Deduction in the Critique of Pure Reason, however, beginning from difference rather than identity.
Moreover, where Kant’s syntheses pertain to operations of the mind, Deleuze and Guattari’s three syntheses belong to being as such. It is on the ground of these distinctions that Deleuze and Guattari are able to unfold their critique in the five paralogisms, for each of these paralogisms pertains to an illicit tracing of the transcendental from the empirical, where fully actualized objects are projected back into the machinic unconscious as forms. Deleuze and Guattari, by contrast, will show how desiring-machines only operate on partial objects, not fully formed persons, thereby undercutting a number of claims from orthodox psychoanalysis.
In this regard, Deleuze and Guattari enact their own “return to Freud”, though one which certainly transforms Freud. As Freud had argued, the unconscious knows no negation, contradiction, opposition, or objects, but instead only knows connections and productions. This was the surprising result he had already attained in his early unpublished Project essay, where the functioning of the primary process becomes unmoored from any sort of representational realism or instinctual and natural relation to sexuality. Yet somehow all of this falls apart with the introduction of the Oedipus where, instead of relating to partial objects and flows, the primary attachment becomes an attachment to fully formed objects (the father, mother, brother, sister, etc.).
Nonetheless, Deleuze and Guattari do not give much in the way of an analysis of just how these paralogisms are possible from the standpoint of active and affirmative desire. Here we would need to look to Nietzsche and Philosophy, as well as, I believe, the work of Lacan. We can thus think of the relationship between schizoanalysis and Lacanian psychoanalysis as being like two sides of a severed egg. The latter explores the domain of the actual and all of its illusions, coupled with their genesis and strategies for escaping these sad passions premised on an installed lack and castration (for Lacan it was always a question of moving beyond these things as I argue in my post on the Borromean knots), whereas Deleuze and Guattari explore the productive realm of the unconscious and its desiring-machines perpetually manufacturing the real.