nse perception? Plato answers this question by stating that the Forms are known in thought. They are the objects of thought, therefore, whenever you are thinking, you are thinking of Forms. An important point to note about the Forms is the idea of permanence. The Forms are forever unchanging. An important standard of Plato’s theory of knowledge was that all genuine objects of knowledge be described without contradiction. Therefore, because all objects perceived by sense undergo change, an assertion can be made that such objects at one time will not be true at a later time. Because what is fully real must, for Plato, be fixed, permanent, and unchanging, he identified the real with the ideal realm of “being” as opposed to the empirical world of “becoming”. This all leads to Plato’s inevitable rejection of empiricism. The true definition of empiricism is, “the view that holds sense perception to be the sole source of human knowledge” (Jones, 369). It is obvious that this view is highly contradictive with Plato’s theory of Forms. He thought that propositions derived from sensory experience have, at most, a degree of probability; they are not certain. Pure knowledge may only be derived from certain, permanent facts. The argument is really that not only do the things we perceive change, but so do the circumstances in which we perceive them. Take this example, for instance. If I were to hold a cup of hot coffee in my left hand and a cold beer in my right, and then place both hands into a tub of lukewarm water, that same tub of water would feel cold to the left hand, and warm to the right hand. Moreover, things must often seem different to me than they do to anyone else, for the circumstances of others are rarely the same as mine. We are also liable to experience illusions, states of dreaming and hallucination, and our initial judgments are also often influenced by our expectations and biase...
