Gilles Deleuze was a philosopher known for his complex and multifaceted ideas, so characterizing his philosophy as solely "vitality > negativity" requires nuance. However, it's fair to say that elements of Deleuze's philosophy can be interpreted as emphasizing vitality and affirmation of life over negativity and nihilism.
Deleuze's thought is heavily influenced by concepts such as becoming, difference, and affirmation. He rejects traditional dualisms and instead emphasizes the creative and productive aspects of existence. In his works with Félix Guattari, such as "Anti-Oedipus" and "A Thousand Plateaus," they articulate a philosophy of "becoming" that emphasizes the constant process of change and transformation in the world.
Deleuze also explores the idea of "vitalism," which emphasizes the immanent creative forces within life and the universe. He critiques traditional metaphysical frameworks that prioritize static identities and instead celebrates multiplicity, becoming, and the dynamic interplay of forces.
However, it's important to note that Deleuze's philosophy is not simply a celebration of vitality without recognition of negativity or challenges. He acknowledges the presence of forces of repression, control, and limitation in society and argues for the importance of resistance and creativity in overcoming these forces. Deleuze's notion of "deterritorialization" involves breaking free from fixed structures and opening up new possibilities for thought and action.
In summary, while elements of Deleuze's philosophy can be interpreted as emphasizing vitality and affirmation of life, his thought is complex and multifaceted, and it would be an oversimplification to reduce it to a simple dichotomy of vitality versus negativity.