Excerpt from the book When Kindness and Compassion Take a Form – A Glimpse of the Transcendental Life & Teachings of nitya-līlā-praviṣṭa oṁ viṣṇupāda aṣṭottara-śata Śrī Śrīmad Bhaktivedānta Vāmana Gosvāmī Mahārāja by Śrīla Bhaktivedānta Nārāyaṇa Mahārāja (page 16)

Sometimes, especially during Navadvīpa parikramā, pūjyapāda Trivikrama Mahārāja and I would have loving quarrels (prema-kalaha). They would even take place on the stage, in public. He would cut my arguments and I would cut his. Once, in the course of one such quarrel, I presented mādhurya-rasa according to the conception of Śrīla Rūpa Gosvāmī. My point was that on the strength of their service to Śrī Rādhā, Her maidservants (dāsīs) do not even care to serve Śrī Kṛṣṇa. I quoted the śloka, na pāraye ’haṁ niravadya-saṁyujām (Śrīmad-Bhāgavatam 10.32.22).  Śrī Kṛṣṇa is saying “O gopīs, even if I lived as along as Lord Brahmā or any other demigod, I would not be able to repay My debt to you.”
In Gīta-govinda (3.7.9) we see that when Śrīmatī Rādhikā is in māna, Kṛṣṇa says “O dearest Rādhikā, I will never offend You like that again. Please forgive Me.” And also in Gīta-govinda (10.19.8): “smara-garala khaṇḍanaṁ mama śirasi maṇḍanaṁ dehi pada pallavam udāram – My beloved! Offer the fresh buds of Your enchanting feet as an ornament upon My head.”
Therefore, in the eyes of tattva, Śrī Kṛṣṇa is Svayam Bhagavān, but due to the excellence, or superiority of āśraya-jātīya-prema (the prema experienced by devotees) He becomes indebted to Śrīmatī Rādhikā and begs from Her alms of forgiveness.
Pūjyapāda Trivikrama Mahārāja refuted my statements and established the bhagavattā, or Godliness, and importance of Śrī Kṛṣṇa. In this way there ensued sweet debates between us. Pūjyapāda Vāmana Mahārāja, the chairperson of the assembly, witnessed our loving quarrels and spoke his conclusion. “‘Rādhā-pakṣa chāḍi ye jana se jana, ye bhāve se bhāve thāke āmī to rādhīkā pakṣa pātī sadā – I am exclusively in the group of Śrī Rādhājī. I become happy when She is happy, and when She is sad, I become sad.’ This is the vicāra, or conception, of the rūpānugas (followers of Śrī Rūpa Gosvāmī).
“Performing bhajana with the inclination to serve Śrīmatī Rādhikā is the best type of bhajana. It cannot be said that no one is qualified to perform this kind of bhajana. In this world there is always a rūpānuga Vaiṣṇava who is capable of doing such bhajana. Past, present and future – there will always be someone with this qualification. To say otherwise is incorrect because the world would face destruction if it lacked the presence of such a qualified person.”
His philosophical perspective made a substantial impression on the audience.

The following are excerpts from Walking with A Saint – Morning Walks and Conversations 2009 and 2010 by Śrīla Bhaktivedānta Nārāyaṇa Mahārāja

Śrīpāda Śrīdhara Mahārāja: By performing bhajana, gradually, step by-step thru śraddhā, how far can a madhyama-adhikārī go?
Śrīla Bhaktivedānta Nārāyaṇa Mahārāja: First madhyama-kaniṣṭha, then madhyama-madhyama, and then madhyama-uttama – one will reach up to ruci and āsakti (spontaneous attachment for Kṛṣṇa). Then, when rati (bhāva) manifests, that is the beginning of uttama-adhikāra.
Śrīpāda Śrīdhara Mahārāja: Does the uttama-adhikārī have prema?
Śrīla Bhaktivedānta Nārāyaṇa Mahārāja: The uttama-adhikārī goes up to the level of prema, but when he achieves prema his body changes. His physical body can no longer exist.

Nityānanda dāsa (from Los Angeles): I have read, that part of our siddhānta is that there must be at least one devotee in the world who is performing worship of Śrīmatī Rādhikā on the level of bhāva – otherwise the world would be destroyed. I read this in an article by Śrīla Vāmana Gosvāmī Mahārāja. I don’t understand why the world will be destroyed if there is no such devotee in the world.
Śrīla Bhaktivedānta Nārāyaṇa Mahārāja: This is correct, but such devotees are rare.
Śrīpāda Mādhava Mahārāja: He can’t understand why the world will be destroyed.
Śrīla Bhaktivedānta Nārāyaṇa Mahārāja: This is the rule and regulation of Kṛṣṇa; no one can change it.

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