Svarūpa Dāmodara: In the scientific terminology the eternality of the soul can be compared with the conservation of energy?
Prabhupāda: There is no question of conservation. It is energy. It is always existing. If you say that is conservation of energy then...
Svarūpa Dāmodara: No. The definition of the conservation of energy is the energy cannot be created nor destroyed. That means that it is eternal.
Prabhupāda: Yes. Yes, that we admit. Original energy of Kṛṣṇa, that is existing with Kṛṣṇa and Kṛṣṇa is eternal. Therefore all His energies are eternal.
Karandhara: So the living entity is also eternal.
Prabhupāda: Just like the sun. Sun, the energy heat and light. If sun is eternal, heat and light (are) eternal. Hmm. What is that?
Karandhara: They say energy cannot be created or destroyed, then life cannot be created or destroyed.
Prabhupāda: We say that. Life is eternal. It is not created nor destroyed. It is covered only for the time. Just like, I'm eternal, but last night I was covered by dreaming, sleeping. So I say "yesterday" and "today." This is my position. I'm eternal, but because last night I was covered by dreaming, therefore I say "yesterday" and "today."