Another analogy that Plato came up with was the allegory of the cave. Here the physical world is in the form of a cave, in which the humans are trapped from the beginnings of our life, where we are stationary and cannot move our heads, so we perceive only shadows and sounds. Without reason, one of us is released and is encouraged to travel upward to the entrance of the cave. This revelation is very confusing to the person. Then he is pulled to the entrance of the cave, where the light is hurting his eyes that are accustomed to the dark, which threatens the only security his life has known. The world of daylight represents the realm of Ideas. His eyes grow accustomed to the light and he can look up to the sun, and understand what the ultimate source of light and life is. This is symbolic of the Idea of the Good in the Realm. This gradual process is a metaphor of education, and enlightenment. Yet the real lesson of Plato is that the enlightened person now has a moral responsibility to the unfortunate people, still in the cave, to rescue them and bring them into the light. This lesson brings about Socrates’ famous quote, “As for the man who tried to free them and lead them upward, if they could somehow lay their hands on him and kill him, they would do so.” This is ironic in nature. The fact that this man is trying to help these people and they are so uneducated masses will resent him and threaten his life.