Abstract
This paper looks at a hypothesis that for Plato politics is a field of ethical acts. The reason behind every truly political action is justice, in a way making justice a method of politics. According to Resp. 433a-c, it’s possible to interpret two meanings of justice: the principle of differentiation by division of functions, and something that provides δύναμις for virtues. Seeing justice as a creative energy, justice can be understood as a motivational force to counterbalance the force of desires. Republic is clear about “who has to do x?” and “how to do x?”. The question “why to do x” in all the cases concerning life in polis is the one, that could possibly link the motivational gap in politics and ethics of Plato’s Republic.