Invoking auspiciousness: Lord Śrī Kṛṣṇa is the Supreme Personality of Godhead, the cause of all causes, the reservoir of all rasas, or relationships, which are called neutrality (passive adoration), servitorship, friendship, parenthood, conjugal love, comedy, compassion, fear, chivalry, ghastliness, wonder and devastation. He is the supreme attractive form, and by His universal and transcendental attractive features He has captivated all the gopīs, headed by Tārakā, Pālikā, Śyāmā, Lalitā, and ultimately, Śrīmatī Rādhārāṇī. Let His Lordship's grace be on us so that there may not be any hindrance in the execution of this duty of writing The Nectar of Devotion, impelled by His Divine Grace Śrī Śrīmad Bhaktisiddhānta Sarasvatī Gosvāmī Prabhupāda.
Let me offer my respectful obeisances unto the lotus feet of Śrīla Rūpa Gosvāmī Prabhupāda and of Śrīla Bhaktisiddhānta Sarasvatī Gosvāmī Prabhupāda, by whose inspiration I have been engaged in the matter of compiling this summary study of Bhakti-rasāmṛta-sindhu. This is the sublime science of devotional service as propounded by Śrī Caitanya Mahāprabhu, who appeared 500 years ago in West Bengal, India, to propagate the movement of Kṛṣṇa consciousness.
Śrīla Rūpa Gosvāmī begins his great book by offering his respectful obeisances unto Śrī Sanātana Gosvāmī, who is his elder brother and spiritual master, and he prays that Bhakti-rasāmṛta-sindhu may be very pleasing to him. He further prays that by residing in that ocean of nectar he may always feel transcendental pleasure in the service of Rādhā and Kṛṣṇa.
Let us offer our respectful obeisances to all the great devotees and ācāryas (holy teachers), who are compared with sharks in the great ocean of nectar and who do not care for the various rivers of liberation. Impersonalists are very fond of merging into the supreme, like rivers that come down and merge into the ocean. The ocean can be compared with liberation and the rivers with all the different paths of liberation. The impersonalists are dwelling in the river water, which eventually comes to mix with the ocean. They have no information, however, that within the ocean, as within the river, there are innumerable aquatic living entities. The sharks who dwell in the ocean do not care for the rivers which are gliding down into it. The devotees eternally live in the ocean of devotional service, and they do not care for the rivers. In other words, those who are pure devotees always remain in the ocean of transcendental loving service to the Lord and have no business with the other processes, which are compared to the rivers that only gradually come to the ocean.
Śrīla Rūpa Gosvāmī prays to his spiritual master, Śrīla Sanātana Gosvāmī, for the protection of Bhakti-rasāmṛta-sindhu—the Ocean of the Pure Nectar of Devotional Service—from the argumentative logicians who unnecessarily meddle in the science of service to the Lord. He compares their arguments and logic to volcanic eruptions in the midst of the ocean. In the midst of the ocean such volcanic eruptions can do very little harm, and similarly, those who are against devotional service to the Lord and who put forward many philosophical theses about the ultimate transcendental realization cannot disturb this great ocean of devotional service.