Stephen Asma in Aeon:
Imagination is intrinsic to our inner lives. You could even say that it makes up a ‘second universe’ inside our heads. We invent animals and events that don’t exist, we rerun history with alternative outcomes, we envision social and moral utopias, we revel in fantasy art, and we meditate both on what we could have been and on what we might become. Animators such as Hayao Miyazaki, Walt Disney and the people at Pixar Studios are masterful at imagination, but they’re only creating a public version of our everyday private lives. If you could see the fantastic mash-up inside the mind of the average five-year-old, then Star Wars and Harry Potter would seem sober and dull. So, why is there so little analysis of imagination, by philosophers, psychologists and scientists?
Apart from some cryptic passages in Aristotle and Kant, philosophy has said almost nothing about imagination, and what it says seems thoroughly disconnected from the creativity that artists and laypeople call ‘imaginative’.
Aristotle described the imagination as a faculty in humans (and most other animals) that produces, stores and recalls the images we use in a variety of mental activities. Even our sleep is energised by the dreams of our involuntary imagination. Immanuel Kant saw the imagination as a synthesiser of senses and understanding. Although there are many differences between Aristotle’s and Kant’s philosophies, Kant agreed that the imagination is an unconscious synthesising faculty that pulls together sense perceptions and binds them into coherent representations with universal conceptual dimensions. The imagination is a mental faculty that mediates between the particulars of the senses – say, ‘luminous blue colours’ – and the universals of our conceptual understanding – say, the judgment that ‘Marc Chagall’s blue America Windows (1977) is beautiful.’ Imagination, according to these philosophers, is a kind of cognition, or more accurately a prerequisite ‘bundling process’ prior to cognition. Its work is unconscious and it paves the way for knowledge, but is not abstract or linguistic enough to stand as actual knowledge.
More here.