idealism
ide.al.ism \-'de--(*-).liz-*m\ n 1a1: a theory that ultimate reality lies in a realm transcending phenomena 1a2: a theory that the essential nature of reality lies in consciousness or reason 1b1: a theory that only the perceptible is real 1b2: a theory that only mental states or entities are knowable 2a: the practice of forming ideals or living under their influence 2b: something that is idealized 3: literary or artistic theory or practice that values ideal or subjective types or aspects of beauty more than formal or sensible qualities or that affirms the preeminent value of imagination as compared with faithful copying of nature
Webster's English Dictionary