Paramahamsa - So we can come to the spiritual world and return?
Prabhupada - Yes.
Paramahamsa - Falldown?
Prabhupada - Yes…. He goes out of his free will; again comes out, again goes. Like that. (Cheviot Hills Golf Course-5-13-73, L.A.)

Krsna says in Bhagavad Gita (8.16): "From the highest planet in the material world down to the lowest, all are places of misery wherein repeated birth and death take place. But one who attains to My abode, O son of Kuntī, never takes birth again."

I believe Lord Krsna. Prabhupada must be talking about Brahmajyoti.