ts are the ones who obeyed the rules instated by the rulers. Having shown that justice may not only be the interest of the stronger but also the injury, Plato further seeks the definition of justice. Socrates implements a usage of medicine. The art of medicine tends to the needs of the body, not to the interest of the medicine. If medicine attended to its own interest, it would serve no practical use. However, medicine considers the interest of the patients. The same can be said about doctors who consider the needs of their patients, not only his own needs. If the doctor only had interest in himself he would cease to be a doctor. Having argued back and forth Plato dismisses that justice is the interest of the stronger. Rulers who rule in their own interest breed unhappy subjects, ignoring the needs of the subjects for their own needs. In the past history has shown that discontent subjects rebel against their rulers. Thus, rulers should rule in the interest of the subjects.Upon realizing his situation, Thrasymacus changes his opinion, arguing that a ruler benefits in life by injustice. He also states that an unjust man benefits where a just man suffers. Thus, justice is a virtue, injustice a vice. A truly unjust person leads a life of individualism and anarchy, seeking to gain over both the just and unjust. This could not possibly lead to a comfortable and peaceful life. A set of unjust rulers would constantly suspect each other, unable to trust and always desiring to posses what others may have. Ultimately they would destroy themselves, so their injustice would be their vice. However, the just man does not seek more than other just men. Thus, the just benefits and are able to attain happiness and contentment, unworried of constantly protecting his own interest.Having shown that justice is not the interest of the stronger, an unjust life is worse than a just life, and the just person benefits over the unjust, Plato moves on to define ju...
