Prabhupāda: Prahlāda Mahārāja has criticized mauna-vrata, like that. They have got so.... (break) ...scientists were not perfect in the past, they are not perfect now, and they will continue to remain imperfect. He has written clearly.
Dr. Patel: So this, our science, is a science of māyā. Not the science of spirit. Am I right?
Prabhupāda: No.
Dr. Patel: The science deals with all the earthly things.
Prabhupāda: Even an earthly thing, that does not mean you shall commit mistake. Two plus two equal to four, that is earthly thing. But if you make two plus two equal to five...
Dr. Patel: One.
Prabhupāda: That is not...
Dr. Patel: If you make two plus two is equal to one, then that is spiritual. (laughs)
Prabhupāda: No, no. Apart from spiritual, they are talking and again changing. Sometimes they say two plus two equal to four, sometimes they say two plus two equal to five, and then next they say two plus two equal to three. This is going on. So where is you truth? (break) ...the mūḍhas.
Dr. Patel: No, no, no, you are not.
Prabhupāda: Yes.
Dr. Patel: Don't say that. We are mūḍha.
Prabhupāda: No, but because we simply talk of Kṛṣṇa, therefore, although mūḍha, we are not mūḍha. Yāre dekha tāre kaha kṛṣṇa-upadeśa (CC Madhya 7.128). That's all.
Dr. Patel: That's right. I am talking to my scientist friends, sir. That is which medium they move.
Prabhupāda: The protons, electrons, and they have not come to any conclusion. They are still dividing. NDA? They have found some NDA?
Dr. Patel: Elementary particles.
Prabhupāda: No, NDA?
Puṣṭa Kṛṣṇa: DNA.