This article is an essay to apply the notion of volume of being to Fernando Pessoa. The volume of being refers to a human being. It is a container with its edge and a content made up of various components corresponding to the major themes of the human and social sciences: action, gesture, emotion, a thought, idea, memory, character, temperament, social or cultural markers. The article is presented as an exercise in anthropology, not literary criticism. It is based on fragments from The Book of Disquiet. Pessoa becomes a volume of being structured by a character or temperament, his memory, his feelings, his modes of consciousness. Rather than focusing on heteronymic multiplicity, the author insists on the intrastructuration of these elements within “the Volume-Pessoa” writing, inventing, remembering and comparing.