Prabhupāda: Aviśuddha-buddhayaḥ (SB 10.2.32). They do not know. They are after brahmaṇanda, transcendental pleasure, but they do not know what is actually transcendental pleasure, impersonalists. Therefore their intelligence is not clean. They go to the spiritual kingdom, transcendental platform, but they do not know that how the real transcendental pleasure can be achieved. Therefore their knowledge is not perfect.
Revatīnandana: When they want to come back, is it very easy for them to come back, or have they got to endure . . .?
Prabhupāda: No, they automatically come back, because he is hankering after varieties. So that variety is not there, so he is attracted again in the material world. Just like so many sannyāsīs. Take Vivekananda. He wanted to lecture on Vedānta, which is liberation. He came again back to the hospitalizing and philanthropic work because he could not find the variety of pleasure in Vedānta.
Of course, he was not very much advanced. There are many. There is a sannyāsī is here, he's a . . . Kārpātrī. He is very learned and other . . . he was formerly speaking on Vedānta and other . . . now he is in politics and cow protection. You see? There are many.
Revatīnandana: The question I had is I have a hazy memory that one time I heard that when a soul, when it finally does enter into brahma-jyotir, that he has to remain there for some long duration of time, a daytime of Brahmā or a lifetime of Brahmā. Is that correct? What is that duration?
Prabhupāda: Not that. That is not like that.
Revatīnandana: Not like that. Thank you.
Prabhupāda: But he feels inconvenience without varieties of life. The Bhāgavata says, tvayy asta-bhāvād aviśuddha-buddhayaḥ: "Their intelligence is not clean." Arūhya kṛcchreṇa paraṁ padaṁ tataḥ (SB 10.2.32): "Although they rise up to the brahma-jyotir," patanty adho tataḥ, "they again come back."
Haṁsadūta: And the nirvāṇa conception of life is just before Brahman?
Prabhupāda: Nirvāṇa conception is marginal position between brahma-jyotir and this material world.