Both Herclitus and Paramendies assisted Plato in his concept of dualism. Plato viewed both philosophers’ interpretation of knowledge to be partially correct in their efforts to characterize reality. Heraclitus concept of “the one” involved a process or change; an orderly cycle. Parmenides is responsible to referring “the one” as Being; perfect, compete, whole, unchangeable. Plato detected that both philosophers probably thought their beliefs existed in the physical world. Acknowledging that reality is not a single thing, Plato’s concept of Dualism concluded there are two realities; Heraclitean and another Paramenidean. The visible realm of Becoming encompasses all objects and images perceived through our physical senses while the intelligent realm of Being embraces the world of Forms and truth at its highest level.
Plato developed a theory of forms connecting the realm of “being” from the realm of Becoming. Sensibles are things that are perceived as part of a changeable world of Becoming. Plato’s description of the level of being that Parmenides tried to portray can not exist in world of sensibles because the very essence of knowledge is unchanging. Considering opinions are changeable, they must be less real then which does not, knowledge. This theory of Forms provides a rational explanation of how knowledge is possible. Since it is fixed and eternally true, knowledge can not be amongst the physical realm but represented in the intelligible world where the soul is able to apprehend this truth. Plato’s metaphysics is comprised of eternal entities, the theory of Forms. Platonic Forms, like Parmenides' One, are timeless, changeless, and unique. The form of something provides essential order and structure for a particular instance. This basic nature, the quality that makes something what it is, is the concept of Platonic Forms in which a things form is what it uniquely and essentially is. Forms, according to Plato, remain pure and unchanged. This concept which is unaffected by space and time is always the same regardless of any changes that occur in the particular objects participation with that particular Form. Even though we would identify Forms as abstract objects, because they do not physically exist, Plato deems them more real than concrete objects. Plato concludes that objects are perceived in visible