Śrīla Bhaktivinoda Ṭhākura describes surrender unto the Supreme Lord in this way:
mārabi rākhabi—yo icchā tohārā
nitya-dāsa-prati tuyā adhikārā
"My Lord, I am now surrendered unto You. I am Your eternal servant, and if You like You can kill me, or, if You like, You can protect me. In any case, I am fully surrendered unto You."
(Srimad Bhagavatam----5:9:14----purport).

Śrīla Bhaktivinoda Ṭhākura sings,
anādi karama-phale, paḍi' bhavārṇava-jale,
taribāre nā dekhi upāya
"My Lord, I do not know when I commenced my material life, but I can certainly experience that I have fallen in the deep ocean of nescience. Now I can also see that there is no other way to get out of it than to take shelter of Your lotus feet."
(Srimad Bhagavatam----5:25:14----purport).

"Regardless of one's circumstances, if one fully engages his activities, mind and words in the devotional service of the Lord, he should be understood to be a liberated person." Śrīla Bhaktivinoda Ṭhākura was a responsible officer and a householder, yet his service to the cause of expanding the mission of Lord Caitanya Mahāprabhu is unique. Śrīla Prabodhānanda Sarasvatī Ṭhākura says, durdāntendriya-kāla-sarpa-paṭalī protkhāta-daṁṣṭrāyate. The sense organs are certainly our greatest enemies, and they are therefore compared to venomous serpents. However, if a venomous serpent is bereft of its poison fangs, it is no longer fearful. Similarly, if the senses are engaged in the service of the Lord, there is no need to fear their activities. The devotees in the Kṛṣṇa consciousness movement move within this material world, but because their senses are fully engaged in the service of the Lord, they are always aloof from the material world. They are always living in a transcendental position.
(Srimad Bhagavatam----5:1:17----purport).

While in the subtle body, we create many plans to enjoy sense gratification. These plans are recorded in the spool of one's mind as bīja, the root of fruitive activities. In conditional life the living entity creates a series of bodies one after another, and this is called karma-bandhana. As explained in Bhagavad-gītā (3.9), yajñārthāt karmaṇo 'nyatra loko 'yam-karma-bandhanaḥ: if we act only for the satisfaction of Viṣṇu, there is no bondage due to material activity, but if we act otherwise, we become entrapped by one material activity after another. Under these circumstances, it is to be supposed that by thinking, feeling and willing, we are creating a series of future material bodies. In the words of Bhaktivinoda Ṭhākura, anādi karama-phale, padi' bhavārṇava jale. The living entity falls into the ocean of karma-bandhana as a result of past material activities. Instead of plunging oneself into the ocean of material activity, one should accept material activity only to maintain body and soul together. The rest of one's time should be devoted to engaging in the transcendental loving service of the Lord. In this way one can attain relief from the reactions of material activity.
(Srimad Bhagavatam----4:29:78----purport).

It is said in Śrīmad-Bhāgavatam, ahaṁ mameti: (S.B.5:5:8) One thinks, "I am this body, and in this bodily relationship he is my master, he is my servant, she is my wife, and he is my son." All these conceptions are temporary due to the inevitable change of body and the arrangement of material nature. We are gathered together like straws floating in the waves of an ocean, straws that are inevitably separated by the laws of the waves. In this material world, everyone is floating on the waves of the ocean of nescience. As described by Bhaktivinoda Ṭhākura:
(miche) māyāra vaśe, yāccha bhese',
khāccha hābuḍubu, bhāi
(jīva) kṛṣṇa-dāsa, ei viśvāsa,
karle ta' āra duḥkha nāi
Śrīla Bhaktivinoda Ṭhākura states that all men and women are floating like straws on the waves of material nature. If they come to the understanding that they are the eternal servants of Kṛṣṇa, they will put an end to this floating condition. As stated in Bhagavad-gītā (3.37): kāma eṣa krodha eṣa rajo-guṇa-samudbhavaḥ. Due to the mode of passion, we desire many things, and according to our desire or anxiety and according to the order of the Supreme Lord, material nature gives us a certain type of body. For some time we play as master or servant, as actors play on the stage under someone else's direction. While we are in the human form, we should put an end to this nonsensical stage performance. We should come to our original constitutional position, known as Kṛṣṇa consciousness. At the present moment, the real master is material nature. Daivī hy eṣā guṇa-mayī mama māyā duratyayā (B.G.7:14). Under the spell of material nature, we are becoming servants and masters, but if we agree to be controlled by the Supreme Personality of Godhead and His eternal servants, this temporary condition ceases to exist.
(Srimad Bhagavatam----5:10:12----purport).

When one becomes unconscious due to being bitten by a snake, one cannot understand what is taking place outside the body. This unconscious condition is the condition of deep sleep. Similarly, the conditioned soul is actually sleeping on the lap of the illusory energy. Bhaktivinoda Ṭhākura has sung, kota nidrā yāo māyā-piśācīra kole: "O living entity, how long will you sleep in this condition on the lap of the illusory energy?" People do not understand that they are actually sleeping in this material world, being devoid of knowledge of spiritual life.
(Srimad Bhagavatam----5:13:9----purport).

Śrī Caitanya Mahāprabhu appeared in the land of Bhārata-varṣa, specifically in Bengal, in the district of Nadia, where Navadvīpa is situated. It is therefore to be concluded, as stated by Śrīla Bhaktivinoda Ṭhākura, that within this universe, this earth is the best planet, and on this planet the land of Bhārata-varṣa is the best; in the land of Bhāratavarṣa, Bengal is still better, in Bengal the district of Nadia is still better, and in Nadia the best place is Navadvīpa because Śrī Caitanya Mahāprabhu appeared there to inaugurate the performance of the sacrifice of chanting the Hare Kṛṣṇa mahā-mantra.
(Srimad Bhagavatam----5:19:24----purport).

Becoming Kṛṣṇa conscious brings about anartha-apagamaḥ, the disappearance of all anarthas, the miserable conditions we have unnecessarily accepted. The material body is the basic principle of these unwanted miserable conditions. The entire Vedic civilization is meant to relieve one from these unwanted miseries, but persons bound by the laws of nature do not know the destination of life. As described in the previous verse, īśa-tantryām uru-dāmni baddhāḥ: they are conditioned by the three strong modes of material nature. The education that keeps the conditioned soul bound life after life is called materialistic education. Śrīla Bhaktivinoda Ṭhākura has explained that materialistic education expands the influence of māyā. Such an education induces the conditioned soul to be increasingly attracted to materialistic life and to stray further and further away from liberation from unwanted miseries.
(Srimad Bhagavatam----7:5:32----purport).

True oneness, however, is not equivalent to the conception of the Māyāvādīs. The true understanding is that the differences are manifested by the energy of the Supreme Personality of Godhead. The seed is manifested as a tree, which displays varieties in its trunk, branches, leaves, flowers and fruits. Śrīla Bhaktivinoda Ṭhākura has therefore sung, keśava tuyā jagata vicitra: "My dear Lord, Your creation is full of varieties." The varieties are one and at the same time different. This is the philosophy of acintya-bhedābheda-tattva.
(Srimad Bhagavatam----7:9:31----purport).

The human form of life is meant for God realization, but this process, which begins with śravaṇaṁ kīrtanaṁ viṣṇoḥ (S.B.7:5:23)—hearing and chanting of the holy name of the Lord—is disturbed as long as our senses are materially attracted. Therefore devotional service means purifying the senses. In the conditioned state our senses are covered by material sense gratification, and as long as one is not trained in purifying the senses, one cannot become a devotee. In our Kṛṣṇa consciousness movement, therefore, we advise from the very beginning that one restrict the activities of the senses, especially the tongue, which is described by Śrīla Bhaktivinoda Ṭhākura as most greedy and unconquerable. To stop this attraction of the tongue, one is authoritatively advised not to accept meat or similar uneatable things nor to allow the tongue to hanker to drink or smoke. Even the drinking of tea and coffee is not permitted. Similarly, the genitals must be restricted from illicit sex. Without such restraint of the senses, one cannot make advancement in Kṛṣṇa consciousness. The only method of controlling the senses is to chant and hear the holy name of the Lord; otherwise, one will always be disturbed, as a householder with more than one wife would be disturbed by them for sense gratification.
(Srimad Bhagavatam----7:9:40----purport).

Formerly, all activities were performed in connection with Viṣṇu, but after Satya-yuga there were symptoms of disrespectful dealings among Vaiṣṇavas. ŚrīlaBhaktivinoda Ṭhākura has said that a Vaiṣṇava is he who has helped others become Vaiṣṇavas. An example of one who has converted many others into Vaiṣṇavas is Nārada Muni. A powerful Vaiṣṇava who has converted others into Vaiṣṇavas is to be worshiped, but because of material contamination, sometimes such an exalted Vaiṣṇava is disrespected by other, minor Vaiṣṇavas. When great saintly persons saw this contamination, they introduced worship of the Deity in the temple. This began in Tretā-yuga and was especially prominent in Dvāpara-yuga (dvāpare paricaryāyāṁ). But in Kali-yuga, worship of the Deity is being neglected. Therefore chanting of the Hare Kṛṣṇa mantra is more powerful than Deity worship.
(Srimad Bhagavatam----7:14:39----purport).