Prabhupāda: Your mathematics is also imperfect because you are imperfect. You are imperfect. There is nothing chance. There must be cause. You do not know the cause. You cannot find out. You are taking a loophole, "chance." Then why you are making so many scientific research things? Chance, let it happen, everything, by chance. Then what is the use of your scientific research? Let everything happen by chance. There is no chance.
Svarūpa Dāmodara: Another answer that we come across when we talk with these people. . .
Prabhupāda: There is nowadays the chance theory.
Svarūpa Dāmodara: No, chance is not so much popular, but the answer that "Chemicals were supplied by nature," that's a very. . .
Prabhupāda: No, what is nature? That you cannot explain.
Svarūpa Dāmodara: That is the answer, theirs. When we ask the scientists. . .
Prabhupāda: But what is this nature?
Svarūpa Dāmodara: Yes, the nature is not understood.
Prabhupāda: Just see. That means you are rascal. You have not understood. You have no knowledge. As soon as you cannot explain, you prove your foolishness, that's all. That is not scientific answer, "chance," "nature." What is the nature? Who is conducting nature? How the nature is going on so nicely?
Rūpānuga: You said before they were acting as teachers, but actually they are still students.
Prabhupāda: No, they are cheater. They are cheater, not teacher. Cheater. They have no full knowledge; still, they have become teacher. You cannot become teacher unless you have got full knowledge. That is cheater.
Tamāla Kṛṣṇa: Śrīla Prabhupāda, suppose that they acknowledge the fact that they do not know, but they challenge, "How do you know what you believe is right?"
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.