_De Iside et Osiride,_ (Concerning Isis and Osiris). VOLUME III. _De E apud Delphos_, (On the E at Delphi). _De Pythia oraculis_, (On the cessation of the Pythian oracles in meter). _De defectu oraculorum_, (On the cessation of oracles). _An virtus doceri possit_, (Can virtue be taught)? _De virtute morali_, (On moral virtue). _De cohibenda ira_, (On the control of the temper). _De tranquillitate animi_, (On peace of mind). _De fraterno amore_, (On fraternal love). _De amore prolis_, (On the love of offspring). _An vitiositas ad infelicitatem sufficiat_, (Does vice of itself make men unhappy)? _Animine an corporis affectiones sint peiores_, (Are the sufferings of the mind more grievous than those of the body)? _De garrulitate_, (On talkativeness). _De curiositate_, (On meddlesomness). _De cupiditate divitiarum_, (On the love of riches). _De vitioso pudore_, (On excess of modesty). _De invidia et odio_, (Concerning envy and hatred). _De se ipsum citra invidiam laudando_, (On praising one’s self without reproach). _De sera numinis vindicta_, (Concerning those whom God is slow to punish). _De fato_, (On fate). _De genio Socratis_, (On the tutelary deity of Socrates). _De exilio_, (On exile). _Consolatio ad uxorem_, (A letter of condolence to his wife). VOLUME IV. _Questionum convivialium libri IX_, (Nine books of table-talk). _Amatorius_, (A dialogue on love). _Amatoriae narrationes_, (Love stories). VOLUME V. _Maxime cum principibus philosopho esse disserendum_, (On the proposition that the philosopher ought chiefly to converse with rulers). _Ad principem ineruditum_, (To an uneducated ruler). _An seni res publica gerenda sit_, (Should an old man hold a public office)? _Praecepta gerendae rei publicae_, (Political precepts). _De unius in re publica dominatione, populari statu et paucorum imperio_, (On monarchy, democracy, and oligarchy). _De vitando aere alieno_, (On avoiding debts). _X oratorum vitae_, (The lives of the ten orators). _De comparatione Aristophanis et Menandri epitome_ (Abstract of a comparison between Aristophanes and Menander). _De Herodoti malignitate_, (On the malice of Herodotus). _De placitis philosophorum libri V_, (Five books of maxims of the philosophers). _Aetia physica_, (Problems in physics). _De facie quae in orbe lunae apparet_, (Concerning the face that appears on the moon’s disk). _De primo frigido_, (On the origin of cold). VOLUME VI. _Aquane an ignis sit utilior_, (Is fire or water the more useful)? _Terrestriane an aquatilia animalia sint callidiora_, (Are water or land animals the more cunning)? _Bruta animalia ratione uti_, (On the use of reason by brutes). _De esu carnium, orationes duo_, (On the eating of flesh, two discourses).