People chained in a dark cave look towards a bright entrance while figures carry objects behind a wall.

People live under the earth in a cave-like dwelling. Stretching a long way up toward the daylight is its entrance, toward which the entire cave is gathered. The people have been in this dwelling since childhood, shackled by the legs and neck. Thus they stay in the same place so that there is only one thing for them to look at: whatever they encounter in front of their faces. But because they are shackled, they are unable to turn their heads around. A fire is behind them, and there is a wall between the fire and the prisoners. Some light, of course, is allowed them, namely from a fire that casts its glow toward them from behind them, being above and at some distance. Between the fire and those who are shackled [i.e., behind their backs] there runs a walkway at a certain height. Imagine that a low wall has been built the length of the walkway, like the low curtain that puppeteers put up, over which they show their puppets. So now imagine that all along this low wall people are carrying all sorts of things that reach up higher than the wall: statues and other carvings made of stone or wood and many other artifacts that people have made. As you would expect, some are talking to each other [as they walk along] and some are silent. See more