Freud's Second Lecture on Psychoanalysis investigates the possible relationship between dreams and mystical (or occult) phenomena, such as telepathy or the power to tell the future. Freud approaches this question scientifically, refusing to take commonplace judgments against occultism as established fact. Though he is skeptical of many claims of occult activity, he admits that science can not definitively disprove those claims. Eventually, he says that his clinical experience suggests that thought-transference is a real event, and that psychoanalysis has brought this possibility to light in a more plausible manner than mystical explanations do.
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