Final answer:
Justice in Plato's Republic is conceived as each citizen fulfilling their prescribed societal role faithfully and not interfering in others' roles, ensuring a harmonious state dedicated to the common good.
Step-by-step explanation:
Plato's Conception of Justice
Justice, according to Plato in his work the Republic, is a principle of specialization and non-interference. Each individual should fulfill the duties of their appointed role in society without meddling in the affairs of other roles. This creates a harmonious state where each part functions for the benefit of the whole. Plato's vision of a just society entails communal sharing and the exercise of virtues such as wisdom, courage, and discipline among all citizens. The guardians, who are essential to maintaining the security and virtue of the city, are trained to seek nothing for themselves and to work solely for the good of the community, embodying the highest form of justice by exhibiting unwavering self-consistency and social harmony.