bookmark to lol @ later. hehehehe
The Sophists were famous in classical Athens of the 450-350 BC as being freeborn men who wandered from city to city teaching young people.
Writings from that period (like Plato's Dialogues) discuss Sophism as an exciting new phenomenon that began with Protagoras, the acknowledged first Sophist, who came from Thrace to Athens around 460 BC.
Up until then, slaves did most teaching, and were still doing elementary teaching in Greece and Rome up until Constantine's time.
Sappho died around 560-570 BC.