Practically we see in our Kṛṣṇa consciousness movement, all you are young Westerners, you never study Vedānta, but you can surprise many so-called Vedāntists how to understand Kṛṣṇa. How it has become possible? Simply by your firm faith in your spiritual master and Kṛṣṇa and chanting Hare Kṛṣṇa. That's all. Yasya deve parā bhaktir yathā deve tathā gurau (ŚU 6.23). This is the Vedic process. If we have got firm faith in guru and firm faith in Kṛṣṇa—guru-kṛṣṇa-kṛpayā pāya bhakti-latā-bīja (CC Madhya 19.151)—then you get the seedling of bhakti-latā. Some way or other, we have to come to this bhakti-latā, increasing or nourishing the bhakti creeper. That will be effective.
So those who are jñānīs, very learned scholars, they cannot understand Kṛṣṇa. Vedeṣu durlabhaṁ. It is not by academic education one can understand Kṛṣṇa. Yatatām api siddhānāṁ kaścid vetti māṁ tattvataḥ (BG 7.3). They so many mistakes they commit. They say it is kalpanā, so many things. But here Kṛṣṇa as Caitanya Mahāprabhu, Kṛṣṇa as Ṛṣabhadeva, Kṛṣṇa as Kṛṣṇa Himself, They are teaching us how to become pure devotee. Because sva kalevaraṁ jihāsur ātmanaḥ. Before leaving your this body, you must be self-realized. That is the aim of life. Bahūnāṁ sambhuvām ante (BG 7.19). We have got this life, human form of life, and how to utilize this human form of life? How to achieve the vairāgya-vidyā? This is vairāgya-vidyā: no more interest in material things. That is vairāgya-vidyā. Even to the body. That is . . . Ṛṣabhadeva is teaching us. This is vairāgya-vidyā. Bhakti-yoga means vairāgya. Caitanya Mahāprabhu also has spoken the same thing, niṣkiñcanasya bhagavad bhajanonmukhasya (CC Madhya 11.8). Niṣkiñcanasya. If you actually want to become a pure devotee, then you have to make this material way of life completely zero. Anyābhilāṣitā-śūnyam (Bhakti-rasāmṛta-sindhu 1.1.11). Then it will be possible. If you have still a pinch of attraction for material life, then it will be stopped, your promotion to the other, spiritual world. Simply attachment to Kṛṣṇa, that will make you advanced. Janma karma ca me divyaṁ yo jānāti tattvataḥ, tyaktvā deham (BG 4.9). He can, after giving up this body, mām eti. He does not accept any more the material body. He is immediately promoted to the spiritual world and Goloka Vṛndāvana, Vaikuṇṭha. There are many millions of Vaikuṇṭha planets in the spiritual world.