One who has understood Kṛṣṇa—"Vāsudeva is everything"—he is mahātmā. Sa mahātmā. So that is recommended. Mahat-sevāṁ dvāram āhur vimukteḥ (SB 5.5.2). If you get the chance of getting such mahātmā, then try to give him service. Become his servant. Then your path of liberation will be open. And tamo-dvāraṁ yoṣitāṁ saṅgi-saṅgam: those who are after sense gratification, if you associate with them, then you are going to the darkness. Two ways are open: āhur vimukteḥ and dvāram, tamo-dvāram. Now make your choice, "In which way we shall go: in this way or that way?"
Everything is given, information, in the Bhagavad-gītā and all other śāstras. Bhagavad-gītā is the gist of all Vedas and Upaniṣads, Vedānta. Vedānta-kṛd vedānta-vit. Kṛṣṇa is vedānta-vit and vedānta-kṛt. Kṛṣṇa, in His incarnation as Vyāsadeva, He has compiled the Vedānta-sūtra. He has recommended also in the Bhagavad-gītā, brahma-sūtra-padaiś caiva hetumadbhir viniścitaiḥ (BG 13.5). Brahma-sūtra-padaiḥ, everything is established very reasonably. So Kṛṣṇa is speaking Vedānta-sūtra. Veda means knowledge; anta means the end of knowledge. The end of knowledge is to understand Kṛṣṇa. Bahūnāṁ janmanām ante jñānavān (BG 7.19). Man of knowledge is jñānavān. So ordinary jñānavān, little knowledge, they cannot understand. Yatatām api siddhānām (BG 7.3). But a person cultivating knowledge for many lives, he can understand, vāsudevaḥ sarvam iti sa mahātmā sudurlabhaḥ (BG 7.19). So Vāsudeva personally explaining Himself, "I am like this; I am like that." Why should we not understand? What is the objection? Boliye.