Socrates
Most of what we know about Socrates comes from the works of Plato, who was his pupil. Socrates lived in the Greek city of Athens. His method of teaching was to have a dialogue with individual students. They would propose some point of view, and Socrates would question them, asking what they meant. He would pretend "I don't know anything; I'm just trying to understand what it is you are saying", or words to that effect. This is now called the Socratic method of teaching.