Guest (2): No, not challenge . . . I'm not saying . . . I mean, I'm not . . .
Prabhupāda: No, it is not possible. Kṛṣṇa accepted Himself a guru. Lord Caitanya Mahāprabhu accepted a guru. They are God Himself. So how you can accept: "I can approach Kṛṣṇa without guru"? Guru-kṛṣṇa-kṛpā. Kṛṣṇa . . . when actually you want Kṛṣṇa seriously—you do not know who is guru—then Kṛṣṇa will give you a guru. Just like Dhruva Mahārāja. He was advised by his mother that, "If you go to the forest you can see God." So he went there. But when he was very serious, then Kṛṣṇa sent him Nārada Muni.
So if you are actually serious about Kṛṣṇa, then Kṛṣṇa will send you some of His representative and he will take charge of you. That is the process. If you do not find a guru, that means Kṛṣṇa is not yet pleased, either you are not serious. Just like when you become serious of studying any subject matter, you find out some college, some institution. You cannot purchase the books and read at home and become expert engineer, expert. No. That is not the process.
Therefore the Vedic knowledge is called śruti. Śrotriyaṁ brahma-niṣṭham. Tad-vijñānārthaṁ sa gurum evābhigacchet, śrotriyaṁ brahma-niṣṭham (MU 1.2.12). So we have to hear by paramparā system. You attend the lectures of a professor because he has heard. He has listened the same instruction from his professor. You don't go to a professor who has never gone to school and college. Do you go there? So this knowledge . . . as material knowledge is received by paramparā, similarly, spiritual knowledge is received also by paramparā.