Plato (circa 427-347 B.C.) was a famous Greek philosopher who is largely responsible for Western philosophy as we know it today. Plato was mentored by Socrates and much of his writings were based off of dialogues between Socrates and others. Plato also was the teacher of many philosophers with the most famous amongst them being Arisotle.
This version of Plato’s Sophist includes a table of contents.