Republic Chapter 9: The Supremacy of Good
Summary:
This is probably one of the most important chapters. The famous devices of the sun simile, the divided line and the allegory of the cave appear here. The previous chapter described why philosophers are prevented from living up to their potential. Here we see that the process itself of searching for the truth alienates people from society.
Plato puts forward the fundamental principle of his metaphysics: knowledge of goodness. «Knowledge, not belief.» All wisdom, intellect and knowledge are of no use without knowing goodness. Goodnes comes before morality, self-discipline and other qualities. «Goodness is the one intrinsic value, all the rest are instrumental.» Goodness is not pleasure. Everyone desires goodness, it must be identified before any goal can be accomplished.
However, Socrates cannot define goodness. «Adeimantues or Glaucon call him out on criticising others without stating his own position, like Thrasymachus did in chapter 1.» Instead he will explain it with likeness, the Simile of the Sun.
Things are visible while characters/types are intellegible. In order to see things we require light from the sun to illuminate them first. The sun enables sight with its light, but the sun _is_ not the light. Goodness is similar to the sun in that it lets us perceive truth and have knowledge, but it is not truth nor knowledge and not the ability of possessing knowledge. As light and sight comes from the sun, truth and knowledge comes from goodness.
The next device is The Divided Line that separates sight and truth into separate realms of the visible and the intellegible. The visible realm can only deal in belief, while the intellegible realm is knowledge. The visible is divided into two parts, one of likeness where we see shadows and reflections, and one of concrete things. Goodness is what gives people the capacity for knowledge. «Without knowledge we would only be able to conduct our actions based on belief and not knowledge. Truly good acts can only come from knowledge.» As likeness and objects stand to each other in the visible realm, so does the two types of reasoning in the intellegible realm. The first part is methods where one reasons from a starting point to an end point, a deduction of facts to support a conclusion, i.e justification. The second method is the dialectic where instead of reasoning to reach an end point, ideas are continually refined until they can be used as starting points in a framework. The first method is an example of what experts of other branches of knowledge use, while the later is the method of the philosophers. Justification versus refinement. «Justification stands to dialectic as likeness stands to objects in the visual realm.»
The cave allegory: People are held captive in a cave for their entire life. They are shackled so that they cannot move or face away from the wall in front of them. Behind them is a fire in which effigies pass by, projecting their shadows onto the wall. These shadows form the world and culture of the prisoners as it is all they perceive. One prisoner is freed and can see the fire behind them. The firelight hurts his eyes that were habituated to only seeing shadows. The pain discourages him from leaving the shackles and seeing the origin of the shadows. Eventually his eyes recover and he realizes his whole life he has only seen the shadows of the effigies that were passing by the fire. If he was dragged up to the surface he would be in tremendous pain from seeing the sun for the first time and be blinded. Eventually he would acclimatise and see more of reality. The effigies were in turn only derived from the objects on the surface. Being closer to reality would make him happier. But he would be alienated from his fellow prisoners, who based their entire culture around recognizing the shadows on the wall. If the freed prisoner returned to the cave he would be again blinded by the darkness. He would utterly fail at recognizing the shadows and be seen as a fool by the prisoners. If anyone tried to drag the prisoners to the surface by force they would kill them. Those who see the truth are discouraged from involving themselves with public affairs and trying to change the beliefs of society.
The analogy ends with an encouragement to not outright dismiss people who seem confused, they could be descending from a higher clarity and be temporarily unable to interface with the beliefs of lower reality.
The philosopher-king guardians have conflicting natures. Their pursuit of truth makes them aloof and uninterested in the society they must administer. They would personally benefit more from only engaging in truth seeking, but the society is not interested in maximising the happiness of any specific class. They must come down and govern for the benefit of the community. The more truth oriented and reluctant to rule the better fit they are. The guardians will govern out of a sense of duty to their community and fear that someone less competent would govern instead (referencing the compensation for power in chatper 1).
Observations:
Cave Allegory and the divided line:
The progression from shadows to effigies to the sun-lit surface represents the mental progression from conjecture to belief to knowledge. Though I'm unsure where the methodological divide is present in the cave allegory. Present at each transition point is pain. When we critisize our current beliefs we destabilize our worldview and even our sense of self. This discourages us from truly trying to get closer to the truth when its more comforting to believe in things as you always did. Society might not appreciate what we discover that goes against convention and might even be hostile against it. Only someone truly motivated to find the truth can go through the pain the get closer to reality. Thus philosophy is a lonely endeavour as most of society are not motivated strongly to look for the truth despite the pain and discomfort. You become alienated from your culture as the established structures are distant from the reality you see. Finally leaving the cave represents the final mental development of becoming a philosopher. Once the prisoner sees the sun as it really is they can now become truly good and discern the types of the intellegible realm.
Infinite regression of shades and effigies:
How do we know we have actually reached the surface and can know of things as they really are? What if the sun us just another effigy that the prisoner is seeing?
Elitism:
The cave analogy can be critised as being pompous and condescending. A common caricature of someone so full of themselves and their self-perception as being above everyone in their intellect. Though Plato would most likely insist that a real philosopher necessarily must be humble.
Collectivism and individualism:
The translator remarked initially that Ancient Greece and pre-modern societies left much less room for individuals. Socrates explicitly states that his objective is to create a moral society and is not creating the greatest happiness for one class or individual. Individuals in the moral society are restricted in what functions they can perform and what information they can consume. But this chapter breaks the untill now collectivist perspective with the individual experience of seeking the truth. While happiness is a communal objective the truth can only be pursued individually.
Conflict between free will and the unchanging nature of goodness:
I see a conflict in the philosophers quest to assimilate himself with the ultimate reality of goodness and the types. The types are timeless and unchanging, as any perfect (good) thing would not change or degrade. Free will is necessary for goodness in order to choose to do moral acts. Reason and the intellect are so critical to Plato that I cannot imagine him accept goodness without free will. But free will is by itself changing, it necessitates non-determinism and unpredictability and not blindly following necessity. How can a person assimilate themself with goodness when it also requires free will that cannot be timeless and unchanging?
Goodness:
The forms/types are good by necessity of being timeless and unchanging. Thanks to goodness we can gain knowledge of the types and in act on knowledge of goodness instead of the belief of what is good.