The perspectival and interpretative nature of human understanding of the world, the other, and the self is at the core of this book's considerations. The notion of interpretative worlds refers to a terrain and a unified theme that lies beyond the deep-seated division between absolutism and essentialism on one side and relativism on the other. Part I reconstructs the interpretative and constructive character of the processes of identification and re-identification of objects and events, as well as the attribution of states concerning individuals. Part II reformulates the idea of verification and objectivity as an interpretative construct. In Part III, the reference of our linguistic and cognitive expressions and the causal relationship between language and the world are conceptualized within the framework of the functions of our interpretative practice.