The expression immaculate perception, used by the German philosopher Friedrich Nietzsche in his text Thus Spoke Zarathustra; the term pertains to the idea of "pure knowledge."
Nietzsche argues that "immaculate perception" is fictional because it ignores the intimate connection between the perceiver and the external world.
[1] An example of the immaculate perception principle is Sigmund Freud's theory of mental representation, or what some[who?]
[7] He proposed that perception, which he often used interchangeably with "external reality",[8] is sensory-given and immediately known to the subject;[7] therefore, it essentially involves the passive and temporary registration of an object.
[10] People "actively" construct perceived information[9] as sensory modalities select and tend to simplify phenomena so that they merely serve one's interest and need.