Step-by-step explanation:
Plato said it is impossible for professors of education to put knowledge into the soul which was not there before because the ability of learning has to already be in the soul. One who does not already have this, cannot be taught.
Plato considered education as a way to acquire justice, both individual justice and social justice. He considered that there are three stages of knowledge
knowledge of one's own job, self-knowledge, and knowledge of the Idea of the Good.