Strange to find imagination as the ground of certainty, that nothing is more certain than fantasy-it is as it is.It can be subjected to the noetic procedures of cognition but these cannot negate it. It still stands, and more firmly than the doubts with which it is assailed by noetic inquiry.
— James Hillman
Descartes arrives at certainty by doubting everything until something resists the doubt — and what resists is the thinking self, the cogito. Hillman runs the same experiment and finds something else at bedrock: fantasy. Not the rational subject, but the image. You can turn analytic procedures on a dream or an obsessive thought, submit it to interpretation, context, neurological explanation — and when you look up from all that, the image is still there, unchanged by everything you said about it. It has not been dissolved by understanding it.
This is more than a claim about epistemology. It is a claim about where to stand when nothing else holds. The certainty that gets manufactured through noetic effort — the certainty of argument, proof, therapeutic insight — is always provisional because the machinery that produced it can also unmake it. But imagination is not produced that way. It arrives already certain of itself. The image does not need your confidence in it to remain what it is. This is why Hillman insists on staying with the image rather than rushing to decode it: interpretation may move you away from the one thing that cannot be dislodged. The fantasy is not evidence of something else. It is already the solid ground — arrived at before the cogito, indifferent to whether you believe it.
James Hillman·A Blue Fire: The Essential James Hillman·1989