Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

The other kind of spiritual disclosures is mere illusion, but these illusions take such a tangible form in the mind that many simple-hearted people imagine them to be real. The obvious proof of this is that no concrete result or outcome ever follows from this supposed compelling or summoning of spirits. No, these are mere fables and fictions (71:5)

End of Quote

  Some Ans. Questions 2014
  Citation Source List
: see