Socrates

Socrates was born and died in Athens (c.470-399 BC). He was responsible for the development of what became known as ‘socratic dialogues’, in which a small number of participants would engage in discussing philosophical concepts^(a). Plato was responsible for expanding the use of such dialogues.

Socrates was also one of the characters in Plato’s Atlantis dialogues, Timaeus and Critias. Although he left no writings, his ideas come to us through Plato and Xenophon. Socrates was Plato’s teacher and together with him and Aristotle, Plato’s pupil, they made up what is often referred to as the Heroic Trinity of Greek philosophy.

^(a) https://en.wikipedia.org/wiki/Socratic_method