We go everywhere and we give people the chance of hearing about the glories of the Lord, and gradually they become Kṛṣṇa conscious. This is practically we are feeling it. The recommendation given by Caitanya Mahāprabhu: īhā haya, this process. Satāṁ prasaṅgāt mama vīrya-saṁvido bhavanti hṛt-karṇa-rasāyanāḥ kathāḥ.
So this process, giving chance. Of course, those who are preacher, they must be very sincere and serious. Āpani ācari prabhu jīveri śikṣāya. One must be perfectly in the Vaiṣṇava behavior, sadācāra. Because to hear from professional reciters, there will be no effect. He must be Vaiṣṇava. It is the indication by Sanātana Gosvāmī, avaiṣṇava-mukhodgīrṇaṁ pūtaṁ hari-kathāmṛtam, śravaṇaṁ na kartavyam (Hari-bhakti-vilāsa, quoting from Padma Purāṇa). One who is professional, who is not Vaiṣṇava, from him, one should not hear about the holy names of God, Kṛṣṇa. That is prohibited. Because it will not be effective. Rather, it will be dangerous.
So preaching work, this Kṛṣṇa conscious preaching work, we must be very cautious that those who are preachers, they must be pure Vaiṣṇava. Anyābhilāṣitā-śūnyam (Brs. 1.1.11). Not for money's sake, not for reputation sake, lābha-pūjā-pratiṣṭhā. Only for serving Kṛṣṇa. Ānukūlyena kṛṣṇānu-śīlanam (CC Madhya 19.167). This is pure Vaiṣṇavism. One has to satisfy Kṛṣṇa. Not for any other purpose.
So this preaching work should be taken up by pure Vaiṣṇava, anyābhilāṣitā-śūnyaṁ. And if the śāstric injunctions and the direction given by the authorities, if they are presented as they are, surely there will be effect. It has been proved. And it is being proved. So this process we should adopt, and our success of Kṛṣṇa consciousness movement is assured.