This essay has two aims. The first is to offer an explanation concerning the problem of form in Umberto Eco’s philosophical research, showing that he deals with it while admitting that form can be a temporary element connected to a system of relationships which may be subject to variability. Namely, his reflection is open to the issue of structure. The second aim is to identify some principles that, according to this theoretical approach, may be considered a basis for a positive philosophy of the arts whose adoption might also lead to the understanding of their most recent evolutions. Focusing above all on the work Eco carried out in the years preceding the elaboration of his semiotic theory, I will pursue the following two objectives. Afte...