Interviewer: I'd like to read one thing. This is evidently said by a man named Swami Śiva Premānada of New York's yoga center. He said, "If one has the time to put in about eight or ten hours a day for ten years, one might develop the power to see through a wall through meditation. I've seen people develop X-ray vision, but I've never seen the point of paying such a heavy price for it."
Prabhupāda: But I don't think it is practical that one can meditate for eight to ten hours or twelve hours.
Interviewer: For ten years.
Prabhupāda: But it is... Yes, for ten years. It is most impractical proposition. Therefore, as recommended, we have to follow the regulation as recommended in the scriptures.