if the unconscious, as my experiments prove, is capable of registering and reproducing something without the conscious mind knowing anything about it, then the greatest caution is necessary in evaluating clairvoyant performances.
Jung argues that the unconscious capacity to absorb and reproduce information covertly demands rigorous psychological scrutiny before any clairvoyant claim is accepted as evidence of thought transcending brain and space.
, Collected Works Volume 18: The Symbolic Life, 1976thesis