 The titles of Theophrastus’ works on rhetoric as well as their few surviving fragments suggest that they were probably written to serve different purposes: The treatise On the Art of Rhetoric, for instance, seems to have been rather theoretical in scope, Rhetorical Precepts may have been a practical guide to composing speeches, Introductions could have contained a collection of sample prooemia for imitation, On Judicial Speeches is likely to have been a discussion of courtroom speeches. There is plenty of evidence that in this area, too, Theophrastus’ writings were influential: they are often mentioned by later writers. For instance, Cicero and Quintilian take notice of his contributions to rhetoric (frs. 667–670 FHS&amp;G), his diction is cited occasionally by lexicographers (frs. 449B, 464, 494A–B FHS&amp;G), he is repeatedly referred to as someone who wrote in an attractive manner (frs. 5B, 50–54, 497, 669 FHS&amp;G), and later rhetoricians made use of his Characters for instruction in the schools (see Fortenbaugh 2003c). It proves difficult, however, to determine Theophrastus’ own input to rhetoric, especially when compared to those of Aristotle and the other Peripatetics, since he seems to have been building extensively on their work.