_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).