Coleridge distinguishes between primary and secondary imagination. Primary imagination is an involuntary and subconscious faculty that allows humans to perceive and receive sense impressions from the external world. Secondary imagination is a creative and conscious faculty that selects and reshapes the raw materials of primary imagination to create something new. It involves both conscious selection and subconscious infusion. While primary imagination is a universal human ability, secondary imagination is a heightened creative power that allows poets to blend conscious and unconscious elements into new wholes.