Prabhupāda: Simple, yes. Hare Kṛṣṇa, Hare Kṛṣṇa . . . another is nagna-mātṛkā-nyāya. Nagna-mātṛkā-nyāya, just like sometimes if somebody says: "Mother, when you were a child, you were naked. Why do you put cloth now?" Nagna-mātṛkā-nyāya. The mother was naked when she was a child, therefore she should remain naked still. That is nagna-mātṛkā-nyāya.
Brahmānanda: What is that in connection?
Prabhupāda: It has connection, if somebody was not very important and now he has become important. So the logic is, "How this man can be important?" This logic. That because the mother was naked in the childhood, therefore she should not put on any garment. This is nagna-mātṛkā-nyāya. Things, we change according to the circumstances. You cannot say that "This must remain like this."
Svarūpa Dāmodara: It is also not because of the development of consciousness?
Prabhupāda: Yes.
Svarūpa Dāmodara: The consciousness is finished . . .
Prabhupāda: Yes, yes. Everything is development of consciousness. So when one comes to Kṛṣṇa consciousness, that is perfect. Consciousness is there even in the tree, but that is not developed. When you cut the tree, it feels. Even a child, their consciousness is not developed. Sometimes operation in the body of a child does not require anesthetic, because they do not feel much. You can go on surgical operation on the child's body, and they will feel little, because the consciousness is not developed.
Svarūpa Dāmodara: So according to the consciousness . . .
Prabhupāda: Development.
Svarūpa Dāmodara: . . . when a person becomes very old, he should be very intelligent.
Prabhupāda: No, no. It is a question of consciousness of the body. That does not mean when a dog becomes very old he becomes very experienced. No. Consciousness according to the body. The same theory. Because a child's body is not developed, the consciousness is also not developed.
(aside) Hare Kṛṣṇa.
And these rascals say that because the consciousness is not developed, he has no soul. Soul is there even within the tree. But because the consciousness is not developed, the sensation is less.
Svarūpa Dāmodara: But still the consciousness in a particular species is developing.
Prabhupāda: Everywhere is developing consciousness. And the topmost development is Kṛṣṇa consciousness.
Svarūpa Dāmodara: But the modern science, they say when one becomes old, the memory becomes short, and then they tend to . . .
Prabhupāda: Yes. The body has changed. Therefore you have to accept that body has changed. Therefore next conclusion is when this body is lost, he gets another body. Change of body. Seasonal changes. Hare Kṛṣṇa, Hare Kṛṣṇa . . . that one verse in the Bhagavad-gītā, tathā dehāntara-prāptir dhīras tatra na muhyati (BG 2.13). Dehāntara-prāptiḥ: acceptance of another body. They, these modern scientists, they do not know this. They sometimes explain medical science that blood corpuscles are changing. Do they not?
Svarūpa Dāmodara: There are sometimes white, they say. Suppose when I am injured, by external something hurt. They say the white blood corpuscles are responsible to protect the body. But when the white blood corpuscles is not enough, then infection normally occurs.
Prabhupāda: Anyway, there is change of corpuscle. And with the change of corpuscles there is change of body. That is scientific. Therefore body is changing every moment, so why not after death? Tathā dehāntara-prāptiḥ.
Svarūpa Dāmodara: So consciousness is also subject to body change, change of body.
Prabhupāda: Yes. Body's circumstances, association. Saṅgāt sañjāyate kāmaḥ. According to association, atmosphere, circumstances, the desires changes. So that is . . . desire means consciousness. Just like our boys, they had different consciousness before coming to Kṛṣṇa consciousness. Just like you are also scientist, there are other scientist. But your consciousness is different from their. Therefore you could challenge him like that—if you can create life by accumulation of these facts. He says: "That I do not know." He is not confident in his science.