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.
Sosicrates Sosicrates of Rhodes (Greek: Σωσικράτης ὁ Ῥόδιος ; "floruit" "c." 180 BC) was a Greek historical writer. Sosicrates was born on the island Rhodes and is noted, chiefly, for his frequent mention by Diogenes Laërtius in his "Lives and Opinions of Eminent Philosophers" — referencing Sosicrates as the sole authority behind such facts as Aristippus having written nothing. It is inferred that Sosicrates flourished after Hermippus and before Apollodorus of Athens, and, therefore, sometime between 200 and 128 BC. Sosicrates is claimed to have penned a "Successions of Philosophers", quoted by both Athenaeus and Diogenes Laërtius. Sosicrates also composed a work on the history of Crete — though neither of the aforementioned works have survived.