Copyright © Cambridge Philological Society 2008. Published version reproduced with the permission of the publisher.This paper sets out to contribute to our understanding of the way exempla functioned in Roman culture through a close study of ethics in our only major extant collection of exempla from ancient Rome, Valerius Maximus' Facta et dicta memorabilia. I develop what Matthew Roller in a recent article calls the ‘discourse of exemplarity’ by demonstrating what Valerius Maximus can tell us about the dynamic process of reading and learning from exempla in ancient Rome, and also by suggesting that one role of exempla in Roman culture was to promote ethical deliberation within a tradition of ‘controversial thinking’. The main part of the p...