Metaphysical position which asserts that forms and ideas have reality apart from their physical expression. For example, the the assertion that there is an idealized color "blue" that has a real but abstract existence apart from blue objects. Idealists consider the spiritual or metaphysical world to be more primary than physical reality. In extreme forms of idealism, the physical reality is considered a mere shadow or misinterpretation of the spiritual. Classic Idealism in the Terragen tradition dates back to the Old Earth Greek philosophers Pythagoras and Plato.
Idealistic cosmologies and philosophies are very popular among a number of Sophic clades and cultures. Subtypes, variations, and partial equivalents include dualism, emanationism, mentalism, and acosmism. Contrast philosophical realism, which asserts that the physical word is primary and ideas about it are secondary.