This research reflects on the thought about the language that emerges from Fernando Pessoa s poetry, emphasizing the heteronymic aspect. We intend to investigate, in the heteronymic gesture, a relation with the word that, by surpassing its use as mere instrument of expression of a supposed subjectivity, allows an apprehension of the linguistic phenomenon which comes close to the wittgensteinian notion of language as form of life, bringing, though, new light to the concept, potentiating it. We explore, more specifically, the hypothesis that it is possible to recognize upon the heteronymic strategy a perception of language which extrapolates the wittgensteinian idea of form of life as poetical happening, especially through the way it articulates the idea of performativity in the language and promises to displace the notion of life itself. By putting together Pessoa and Wittgensteins writings, the reflection proposed potentially contributes to: (a) the studies on Fernando Pessoa, by considering the heteronymic gesture within a dialogue little explored, thus privileging the role of the language in the center of the heteronymic creation; (b) the wittgensteinian studies, for it promises to bring contributions to the discussion of a difficult aspect of his thought – the notion of form of life; (c) the literary and language studies in general, for it aims at contemplating the intrinsic links between both knowledge fields.