Simmias of Thebes appears as a main discussion partner in a dialogue from the man who founded what?
Plato Plato ( ; Greek: Πλάτων "Plátōn", ] in Classical Attic; 428/427 or 424/423 – 348/347 BC) was a philosopher in Classical Greece and the founder of the Academy in Athens, the first institution of higher learning in the Western world. He is widely considered the most pivotal figure in the development of philosophy, especially the Western tradition. Unlike nearly all of his philosophical contemporaries, Plato's entire work is believed to have survived intact for over 2,400 years. Others believe that the oldest extant manuscript dates to around AD 895, 1100 years after Plato's death. This makes it difficult to know exactly what Plato wrote.
Brutus (Cicero) Cicero's Brutus (also known as "De claris oratibus") is a history of Roman oratory. It is written in the form of a dialogue, in which Brutus and Atticus ask Cicero to describe the qualities of all the leading Roman orators up to their time. Cicero then attempts to propose a reconstruction of Roman history. It should be noted that while it is written in the form of a dialogue, the majority of the talking is done by Cicero with occasional intervention by Brutus and Atticus. The work was probably composed in 46 BC, with the purpose of defending Cicero's own oratory. He begins with an introductory section on Greek oratory of the Attic, Asianic, and Rhodian schools, before discussing Roman orators, beginning with Lucius Junius Brutus, "The Liberator", though becoming more specific from the time of Marcus Cornelius Cethegus.