Platonic idealism is a philosophical theory that asserts the substantive reality around us is only a reflection of a higher truth, which is the abstraction. This theory was developed by the Classical Greek philosopher Plato and suggests that the physical world is not as real or true as “Forms”. According to this theory, Forms, also known as Ideas, are the non-physical, timeless, absolute, and unchangeable essences of all things, while objects and matter in the physical world are merely imitations.