The interest in early Latin developed mainly outside the field of normative grammar, particularly in authors who belonged to the tradition of scholarly or antiquarian writing. Varro’s encyclopaedic works testify to a unique effort to save uestigia of the cultural and historical past by means of linguistic operations. His approach soon lost its institutional character and was replaced by curiosity for rare minutiae, as in Pliny’s Dubius Sermo. Grammarians like Probus and Caper, whose orientation was philological rather than didactic, considered that the auctoritas of literary models made divergences from the norm or contemporary usage acceptable, and viewed uetustas as the area of experimental variation, both lexical and morphological, with respect to the usage of Republican writers. The inclusion of an immense corpus of literary quotations in comprehensive works (artes grammaticae) facilitated the adoption of an overall perspective that embraced the evolution of the linguistic system at all levels, and kept alive an awareness of the diachronic dimension of the language, which became increasingly profound in scholars like Priscian who read Terence in sixth-century Constantinople.