Student of socrates who wrote the republic

The answer is Plato.

Explanation:

Plato wrote the Republic which was considered a Socratic dialogue. The Republic talked about justice, the order and character of the just city-state, as well as the just man. It has been the most important Plato's work, and it also has influenced many works in terms of philosophy and political theory related to intellect and history.

Through the dialogue, Socrates refers to the meaning of justice and he talks about that with some foreigners as well as some Athenians. He also said that the just man was happier in comparison to the unjust man. They talked about the theory of forms, the soul's immortality and at the same time, they talked about what was the philosopher and poetry's importance in society.  

debating and finalizing the detail of the policy

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