This collection makes a new, profound and far-reaching intervention into the rich yet little-explored terrain between Latin scholastic theory and vernacular literature. Written by a multidisciplinary team of leading international authors, the chapters honour and advance Alastair Minnis's field-defining scholarship. A wealth of expert essays refract the nuances of theory through the medium of authoritative Latin and vernacular medieval texts, providing fresh interpretative treatment to known canonical works while also bringing unknown materials to light.