Man (5): Can you give any explanation about the spiritual, around the earth. If they are all luminous?
Madhudviṣa: He wants to know something about psychic phenomena.
Prabhupāda: Psychic phenomena is the subtle materialism. There are two material conditions: one gross condition, one subtle condition. Gross condition is created by the five elements—earth, water, fire, air, and ether. And the subtle elements are mind, intelligence and ego, false ego. So all these eight elements, they are material. One section is gross, and another section is subtle. So the psychology means the subtle material elements. It is material; it is not spiritual. It is subtle.