Plato’s Allegory of the Cave
A relatively well-known idea of Plato is his allegory of the cave, which appears in his work Republic. In this allegory, Plato describes people who have spent their entire lives in a cave, chained by their necks and ankles to an inner wall, facing the empty outer wall.
They observe the shadows projected onto the outer wall by objects carried behind the inner wall by people invisible to the chained prisoners, who walk along the inner wall with a fire behind them, creating the shadows on the outer wall for the prisoners. The object bearers speak the names of the objects, the sounds of which are echoed near the shadows and are understood by the prisoners as if they were coming from the shadows themselves.
Only the shadows and sounds are the prisoners’ reality, which aren’t accurate representations of the true reality. The shadows represent distorted and blurred copies of the reality that we can perceive with our senses. The goal, then, is to free oneself from the cave by realizing that the shadows on the outer wall aren’t the true reality, but merely a reflection or interpretation.
What Hides Beyond the Veil
The allegory is related to Plato’s theory of forms, according to which forms (and not the reality we know through our senses) possess the highest and most fundamental kind of reality. According to this theory, the forms are the nonphysical, timeless, absolute, and unchangeable essences of all things, which objects and matter in the sensory world merely imitate, resemble, or participate in.
The forms are perfect and unchanging representations of objects and qualities. For example: the idea of plant-being. We can all picture in our minds an image of a plant. However, this image is far from perfect. It’s only through the intelligibility of the form that we know that this image is a plant, because this idea is perfect and unchanging.
These forms are the essence of various objects and qualities. They’re that without which a thing wouldn’t be the kind of thing it is. For example: there are innumerable plants in the world, but the form of plant-being is the core, it’s the essence of them all. Plato claimed that the realm of forms (or: intelligible realm) is the essential basis of true reality and transcendent of our reality: the sensible realm.
Furthermore, he believed that true knowledge and intelligence is the ability to grasp the realm of the forms with one’s mind. Thus, studying reality itself is like peering through the bars of a prison.