Socrates' greatest contribution to educational theory is Socrates' teaching method, also known as midwifery. Plato is the first philosopher with a large number of works handed down from generation to generation in the history of European education, and his educational thoughts are embodied in his masterpiece The Republic. Aristotle is an encyclopedic philosopher in ancient Greece. He put forward the viewpoint that "education follows nature" for the first time in the history of human education. Quintilian in ancient Rome was the first educator devoted to education in the history of western education.