Plato's Allegory of the Cave, written around 380 BCE, is a significant passage from The Republic. It serves as a vivid illustration of Idealism as taught in the Platonic Academy.
The allegory is a metaphor used to help people overcome superficiality and materialism.
In the dialogue, Socrates explains to Glaukon that people are like captives chained in a cave, unaware of the true reality beyond the shadows they see.
Imagine people living in a deep underground cave with a passage opening to the light.
These individuals have been chained since infancy, unable to move their legs or necks, and can only stare forward.
Far above and behind them, a great fire blazes.
Between the fire and the captives, a low partition exists where people carry objects back and forth, similar to puppeteers.
The objects include images of people and animals carved in various materials.
Some carriers speak, while others are silent.
The captives can only see shadows flitting across the cavern wall.
They cannot see themselves or each other, nor the objects casting the shadows.
If they could speak, they would likely assume that the names they give to the shadows apply to real things.
If a sound reverberates through the cavern, they would think the passing shadow made the sound.
The captives consider the shadows of the carved objects as the ultimate truth. 515c
Imagine one captive is freed from their shackles and forced to stand, turn their neck, take steps, and gaze at the fire.
This process is painful, and the glare makes them unable to see the objects that cast the shadows.
If someone tells them that everything they knew was an illusion and that they are now closer to reality, they would struggle to understand.
If asked to identify the artificial figures, they would be at a loss and believe the shadows were more real. 515d
Forced to look at the fire, their eyes would be pained, and they would want to return to the familiar shadows. 515e
The freed captive is forcibly dragged up the steep climb out of the cavern until they stand in the sunlight. 516a
Initially, the light blinds them, and they cannot discern what is considered real.
It takes time to adjust to seeing higher things. First, they see shadows, then reflections in water, and eventually the objects themselves.
Next, they behold the heavenly bodies and the night sky, finding it easier to look at the stars and the moon than the sun. 516b
Eventually, they can gaze upon the sun itself, understanding it as it truly is.
The freed captive begins to reason and understands that the sun is the source of the seasons, years, and everything visible. 516c
The sun is recognized as the origin of everything previously known.
Remembering their fellow prisoners and their accepted wisdom, the freed captive considers themselves fortunate and pities the captives.
The passage references Homer's Odyssey (11.489), where one would