Svarūpa Dāmodara: Śrīla Prabhupāda? If we add the conservation of energy from the Invocation of Īśopaniṣad, it will be a great challenge to science.
Prabhupāda: Yes, yes. That is conservation of energy. Pūrṇam idam, pūrṇam idaṁ pūrṇāt pūrṇam udacyate (Īśopaniṣad, Invocation).
Svarūpa Dāmodara: The understanding in science is that if I burn a piece of wood, that wood contains originally cellulose. So it has certain amount carbons and a certain amount hydrogens. So if I burn it, that carbon will be converted to smaller molecules, like carbon dioxide and water. So if I balance it, starting from the original cellulose, so I'll get a certain number of carbon atoms and hydrogens. So the matter is conserved. In other words, it is not lost. That is the understanding of the science.
Prabhupāda: No, we also, we also say. The energy, we take the sum total, material energy, that is conserved. It is displayed again. When there is annihilation, the whole energy goes back to Kṛṣṇa. Yānti māmikām, prakṛtiṁ yānti māmikām (BG 9.7).
Svarūpa Dāmodara: But the original matter is changed.
Svarūpa Dāmodara: The original substance that I started has changed to some other form.
Prabhupāda: Yes. It is just like you take cotton, you make thread—another form. Then from thread, you make cotton cloth.
Brahmānanda: It's not lost.
Prabhupāda: It is not lost.
Brahmānanda: It just changes its form.
Prabhupāda: The original cotton is there. Simply form is changing. This is the process.
Svarūpa Dāmodara: Is it the same from pūrṇasya pūrṇam ādāya... (Īśopaniṣad, Invocation)?
Prabhupāda: Yes. Everything is preserved. Kārya kāraṇam, cause and effect. In the effect, the cause is there. Therefore Veda says, sarvaṁ khalv idaṁ brahma (Chāndogya Upaniṣad 3.14.1), "Everything is Brahman." Because the cosmic manifestation is the effect of the cause, energy of God, therefore in the effect there is God. Mayā tatam idaṁ sarvaṁ jagad avyakta-mūrtinā (BG 9.4). "In impersonal form, I am existing everywhere," God says, Kṛṣṇa says. Mat-sthāni sarva-bhūtāni: "Everything is existing on Me." Nāhaṁ teṣu ava... "But I am not there." This is the personal and impersonal features of the Lord.
The whole cosmic manifestation is the impersonal—it is resting on the energy of God—but you cannot find God here. The example is just like a big businessman, he has got a big factory. The factory's depending on the energy of that man. But if you want to see that man in the factory, you cannot see. Is that example nice? You cannot say that the factory is existing without him. It is in his brain the whole factory's running on. But if you want to find out where is he, that will be difficult.
Svarūpa Dāmodara: But he's there.
Prabhupāda: He's there. He's there by his energy. He's there. Therefore in all government offices, the picture of the president is there. What is the idea? Here is also president present. But if you want to see him, then you have to go to his headquarter. Similarly, Kṛṣṇa is present everywhere, but if you want to talk with Kṛṣṇa, then you have to go Goloka Vṛndāvana. Hare Kṛṣṇa.