Socrates, born in 469 BC, was a famous philosopher and educator in ancient Greece. It puts forward the three-self principle of "introspection, self-control and self-improvement", and advocates that people can inspire thinking through constant questioning and reflection to discover truth and wisdom. Socrates' educational method is called "midwifery", which helps students draw their own conclusions and solve problems through constant questioning and guidance. This educational method is still widely used in the field of education.