  It is unclear exactly how this series as a whole justified the descriptive title On Vices and their Opposing Virtues and Those in whom and Concerning what things they occur. Not all its books are clearly centered on or titled after ‘vices’. Nor does the work appear to have contained any books which were clearly written about ‘virtues’ opposite to the ‘vices’, such as a book on friendship as an opposite to flattery; it has been speculated that such might have been the relationship between the book about household management and one which is perhaps about greed (philarguria) and which survives in a number of fragmentary pieces written in the hand of On Vices (PHerc. 253, 465, 896, 1090, 1613 and frs. 8–10 and 12 of 1077). Individual books, however, may correspond in some way to the overall title. Thus, On Flattery and On Arrogance analyze the vices of their subtitles, contrast them with the attitude and practice of the Epicurean philosopher (i.e., the virtues) and describe the ‘character’ type afflicted with the vice in question, as well as those characters which are of the same genus or in some way bound up with the main vice, with due attention to the particular nature and danger of each character and the situations in which it is found.