Prabhupāda: Because I have approached the Supreme, the supreme brain, Kṛṣṇa. He is the perfect person in knowledge. Aiśvaryasya. Jñāna. Vedāhaṁ samatītāni (BG 7.26). He knows everything. He's conducting nature. Mayādhyakṣeṇa prakṛtiḥ suyate sa-carācaram (BG 9.10). Yasyājñayā bhramati sambhṛta-kāla-cakra (Bs. 5.52). Janmādy asya yataḥ (SB 1.1.1). So we know from the perfect. Therefore my knowledge is perfect. I am not perfect; that's a fact. But my knowledge is perfect. Just like I am not an electrician, but the electrician has told me that "You push this button. There will be light," so I am doing that. What is the use of becoming electrician? I want light, and the electrician told me, "Just put this button." I am doing that, and light is there. That's all. You cannot say, "You are not a electrician. How you can say the light. . .?" I know from the perfect person, and it is acting. This is our position. It doesn't require that I will have to become electrician. The electrician has told that "You put this button," and there will be light. That's all. Does it require that I will have to become a electrician to conduct this light?
Rūpānuga: No, it simply requires that one listen and take instruction.
Prabhupāda: That's all. Therefore śruti, Veda. Tad-vijñānārthaṁ sa gurum eva abhi. . . (MU 1.2.12). Hear from the guru and do it, that's all. Guru-mukha-padma-vākya, cittete koriyā aikya. Now, what is that song? Who knows this song, śrī-guru-caraṇa-padma?
Nitāi: Guru-mukha-padma-vākya, cittete koriyā aikya, ār nā koriho mane āśā.
Prabhupāda: Koriho mane āśā. Do not try to research anything. That is final. Ar na koriho mane āśā. If the guru is perfect, your knowledge is perfect. And how guru becomes perfect? He has heard from his guru. That's all. Evaṁ paramparā-prāptam (BG 4.2). Kṛṣṇa is the original guru. Imaṁ vivasvate yogaṁ proktavān aham avyayam, vivasvān manave prāhu (BG 4.1). This is paramparā system. You hear. . . Lord Brahmā heard from Kṛṣṇa, tene brahma hṛdā ādi-kavaye (SB 1.1.1). He gave the knowledge to Brahmā. Brahmā distributed the knowledge. Therefore Vedic knowledge is perfect. The Vedic knowledge comes from the Supreme Person. Vedāham. Vedaiś ca sarvair aham eva vedyaṁ vedānta-vid vedānta-kṛt cāham (BG 15.15). So Vedic knowledge coming from Kṛṣṇa, and it is received by Brahmā, and then Nārada receives. Then Vyāsadeva receives. Then he gives us all these Vedic literature. We understand. That's all. It is not by so-called rascal's research. Research means they are rascal. That's all.