This present article contextualises and examines a tradiction that presents itself recurrent way in the midst of clinical practice of psychology and mental health: Mentalism. The Mentalism assumes an internalized and essencialized conception of the subject in favor of instrumental models of clinica. From the criticism on mentalism the authors examine other possibilities to deal with no more the essentialized subject, however, with the complex process of subjectivity. This is a clinical perspective that resorting to Deleuze, Guattari and to Philosophy of Difference offers conception, strategies more commensurate to the complexity of the contemporary world, introducing ethical, political and aesthetic discussions in the psychic dimension
subjectivity; clinical; Deleuze; schizoanalysis