Plato gave the name of an entity, which we, mere mortals according to him couldn't possibly grasp in our lifetimes, as FORMS. The esoteric term was to label the realm of our universe, which we hardly thought to exist. This realm is the truth and nothing but the truth. It is the true reality of our world, a dominion that is eternal, perpetual in existence, which cannot change and that which is absolute.
Reality to us is the phenomena we observe and perceive through our five senses in our daily lives. The beauty of nature, the beauty of a person, the ugliness of an animal, the various bodily pleasures and sights. This would comprise reality to us, but Plato argues that these things are not the true reality but are an illusion to our senses and blinds us from the truth. To explain this to us he alludes us to the story of the allegory of the cave. As the story goes, there are a group of prisoners who in their entire lives have been chained so as to prevent any motion. So they only see what is in front of them. Here, they face the wall of the cave in which they are put. And behind them they have a ball of light, which they assume to be of fire. The only things they see in their lives are the shadows of the figures that pass behind them. They hear noises and once in while some talk. They perceive this to be the world and the true reality. One day, it happens that one of the prisoners is freed from his shackles and is allowed to turn around go to the outside world. The moment he sees all the life and reality of nature, the Sun and the people around, his shock from all this detail overwhelms him. But he soon accepts the authenticity of what he sees and realizes how blind was he former days.
According to Plato, we are these prisoners who are blinded from the true reality. We stay oblivious to truth and continue occupied in our habitual life. The truth being, the grasping the object of knowledge; the knowledge of Forms. This is som
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