I have been posting on this site my theory of a Jungian substrate to Pale Fire, particularly the idea that the novel’s main characters are archetypes within Prof. Botkin’s subconscious. I have found in the text specific Jungian words that relate to the character archetypes, i.e: shadow (Gradus), mask (Shade/persona), joker (G. Emerald/trickster), and typical images for the anima women (soul, butterfly, mermaid, nymph, spider, Medusa, indistinct, blurry), savior (Balthasar/self), Judge & Dr.