In this presentation, I argue for the idea that the unitary view of language, such as the atomistic view held by Locke’s philosophy, has prevented cultural psychology scholars to accept and develop further the idea of mind as language. The thing is that language is not unitary but plural and diverse. Language is not an abstract structure or a transparent medium of communicating minds, but rather a dialogical, historical, and performative process of social encounter, organized through specific and concrete forms, linguistic forms. We do many different things when we speak, and we do many of these different things in the same stream of consciousness. Bakhtin refers to these different social activities that involve typical forms of utterances as speech genres, and each speech genre has its own purpose, audience, interlocutors, compositional style, etc. Speech genres have a political dimension, because they suppose and assume specific speakers and power relationships, and in doing so, they perform power. The interest thread is that there are speech genres for public expression but also for private expression. And here is the core of my argument: different inner speech genres, involving different ways of using language, form and perform different psychological activities. The main argument of the talk is that the mind is formed and performed by the concrete and situated materiality of inner speech genres. Moreover, the mind unfolds as inner genres. In doing so, the political unfolding of the mind is performed through its generic dimension.