A sannyāsī should have an institution meant to preach Kṛṣṇa consciousness; he need not accumulate money for himself. We recommend that as soon as money accumulates in our Kṛṣṇa consciousness movement, fifty per cent of it should be invested in printing books, and fifty per cent for expenditures, especially in establishing centers all over the world. The managers of the Kṛṣṇa consciousness movement should be extremely cautious in regard to this point. Otherwise money will be the cause of lamentation, illusion, fear, anger, material attachment, material poverty, and unnecessary hard work. When I was alone in Vṛndāvana, I never attempted to construct maṭhās or temples; rather, I was fully satisfied with the small amount of money I could gather by selling Back to Godhead, and thus I would provide for myself and also print the literature. When I went to foreign countries, I lived according to the same principle, but when Europeans and Americans began to give money profusely, I started temples and Deity worship. The same principle should still be followed. Whatever money is collected should be spent for Kṛṣṇa, and not a farthing for sense gratification. This is the Bhāgavata principle.
(Srimad Bhagavatam----7:13:34----purport).

Formerly, all activities were performed in connection with Viṣṇu, but after Satya-yuga there were symptoms of disrespectful dealings among Vaiṣṇavas. Śrīla Bhaktivinoda 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. Śrī Caitanya Mahāprabhu set a practical example in that He did not establish any temples or Deities, but He profusely introduced the saṅkīrtana movement. Therefore Kṛṣṇa consciousness preachers should give more stress to the saṅkīrtana movement, especially by distributing transcendental literature more and more. This helps the saṅkīrtana movement. Whenever there is a possibility to worship the Deity, we may establish many centers, but generally we should give more stress to the distribution of transcendental literature, for this will be more effective in converting people to Kṛṣṇa consciousness.
(Srimad Bhagavatam----7:14:39----purport).

The word kriyāsu, meaning "by manual labor" or "by work," is important in this verse. One should engage in practical service to the Lord. In our Kṛṣṇa consciousness movement, all our activities are concentrated upon distributing Kṛṣṇa literature. This is very important. One may approach any person and induce him to read Kṛṣṇa literature so that in the future he also may become a devotee. Such activities are recommended in this verse. Kriyāsu yas tvac-caraṇāravindayoḥ. Such activities will always remind the devotees of the Lord's lotus feet. By fully concentrating on distributing books for Kṛṣṇa, one is fully absorbed in Kṛṣṇa. This is samādhi.
(Srimad Bhagavatam----10:2:37----purport).

For Vaiṣṇavas who are somewhat advanced, or who are fully aware of the glories and potencies of the Lord, Śrīmad-Bhāgavatam is a beloved Vedic literature. After all, we have to change this body (tathā dehāntara-prāptiḥ [Bg. 2.13]). If we do not care about Bhagavad-gītā and Śrīmad-Bhāgavatam, we do not know what the next body will be. But if one adheres to these two books—Bhagavad-gītā and Śrīmad-Bhāgavatam—one is sure to obtain the association of Kṛṣṇa in the next life (tyaktvā dehaṁ punar janma naiti mām eti so 'rjuna [Bg. 4.9]). Therefore, distribution of Śrīmad-Bhāgavatam all over the world is a great welfare activity for theologians, philosophers, transcendentalists and yogīs (yoginām api sarveṣām [Bg. 6.47]), as well as for people in general. Janma-lābhaḥ paraḥ puṁsām ante nārāyaṇa-smṛtiḥ (SB 2.1.6): if we can somehow or other remember Kṛṣṇa, Nārāyaṇa, at the end of life, our life will be successful.
(Srimad Bhagavatam----10:12:12----purport).

When Rūpa Gosvāmī and Sanātana Gosvāmī went to Vṛndāvana, there was not a single temple, but by their preaching they were gradually able to construct various temples. Sanātana Gosvāmī constructed the Madana-mohana temple, and Rūpa Gosvāmī constructed the Govindajī temple. Similarly, their nephew Jīva Gosvāmī constructed the Rādhā-Dāmodara temple, Śrī Gopāla Bhaṭṭa Gosvāmī constructed the Rādhā-ramaṇa temple, Śrī Lokanātha Gosvāmī constructed the Gokulānanda temple, and Śyāmānanda Gosvāmī constructed the Śyāmasundara temple. In this way, many temples were gradually constructed. For preaching, construction of temples is also necessary. The Gosvāmīs not only engaged in writing books but also constructed temples because both are needed for preaching work. Śrī Caitanya Mahāprabhu wanted the cult of His saṅkīrtana movement to spread all over the world. Now that the International Society for Krishna Consciousness has taken up this task of preaching the cult of Lord Caitanya, its members should not only construct temples in every town and village of the globe but also distribute the books that have already been written and further increase the number of books. Both distribution of books and construction of temples must continue side by side in parallel lines.
(Sri Caitanya Caritamrta----1:7:164----purport).

One may sell books or enlist life members or render some other service, but these duties are not ordinary duties. These duties serve as an impetus for remembering Kṛṣṇa. When one goes with a saṅkīrtana party or sells books, he naturally remembers that he is going to sell Kṛṣṇa’s books. In this way, he is remembering Kṛṣṇa. When one goes to enlist a life member, he talks about Kṛṣṇa and thereby remembers Him. Smartavyaḥ satataṁ viṣṇur vismartavyo na jātucit. The conclusion is that one must act in such a way that he will always remember Kṛṣṇa, and one must refrain from doing things that make him forget Kṛṣṇa. These two principles form the basic background of Kṛṣṇa consciousness.
(Sri Caitanya Caritamrta----2:22:113----purport).

Vyāsadeva has given this literature so that everyone may understand one's transcendental position simply by discussing bhāgavata-kathā. Even at the present moment, everyone everywhere can be happy and free from material tribulations by following Śrīmad-Bhāgavatam. There is no need of austerities and penances, which in this age are very difficult to perform. Śrī Caitanya Mahāprabhu has therefore declared, sarvātma-snapanaṁ paraṁ vijayate śrī-kṛṣṇa-saṅkīrtanam. By our Kṛṣṇa consciousness movement, we are trying todistribute Śrīmad-Bhāgavatam so that anyone in any part of the world can be absorbed in the Kṛṣṇa consciousness movement by chanting and hearing about the activities of Kṛṣṇa and be free from all material tribulations.
(Srimad Bhagavatam----10:11:58----purport).