"A pure devotee does not desire anything. In the Caitanya-caritāmṛta the pure devotee is called niṣkāma, which means he has no desire for self-interest. Perfect peace belongs to him alone, not to them who strive for personal gain. The pure devotee only wants to please the Supreme Lord, and so the Lord says that for anyone who is unflinchingly devoted to Him, He is easy to attain. The devotee can render service to any of the transcendental forms of the Supreme Lord, and he meets with none of the problems that plague the practitioners of other yogas. Bhakti-yoga is very simple and pure and easy to perform. One can begin by simply chanting Hare Kṛṣṇa. Kṛṣṇa is very merciful to those who engage in His service, and He helps in various ways that devotee who is fully surrendered to Him so he can understand Him as He is. The Lord gives such a devotee sufficient intelligence so that ultimately the devotee can attain Him in His spiritual kingdom.
The special qualification of the pure devotee is that he is always thinking of Kṛṣṇa without considering the time or place. There should be no impediments. He should be able to carry out his service anywhere and at any time. Some say that the devotee should remain in holy places like Vṛndāvana or some holy town where the Lord lived, but a pure devotee can live anywhere and create the atmosphere of Vṛndāvana by his devotional service. It was Śrī Advaita who told Lord Caitanya, 'Wherever You are, O Lord—there is Vṛndavana.' "