According to Socrates, what is required for his ideal state to be realized?

In Socratic thought, particularly as laid out in Plato's "Republic," the concept of the ideal state hinges on the idea that philosophers, who possess wisdom and knowledge of the Good, should take on the role of rulers. This stems from Socrates' belief that only those who understand the essence of justice and virtue can govern effectively and create a just society.

Training kings to be philosophers emphasizes the importance of wisdom and ethical understanding in leadership. When rulers possess philosophical knowledge, they are better equipped to make decisions that benefit the entire community. This ideal merges the qualities of rulers and philosophers into a singular role, ensuring that governance is informed by deep understanding rather than mere power or wealth.

The other options do not align with Socratic philosophy about governance. For instance, peasants learning philosophy may enhance society but does not address the core structure of leadership. Similarly, suggesting that warriors govern the city or that philosophers merely become kings misses the critical assertion that effective governance requires the specific training and knowledge that only philosophers possess. Thus, the crux of a well-ordered state, according to Socrates, relies on the integration of philosophical wisdom in rulers.