Prabhupada's lecture - Śrīmad-Bhāgavatam 1.15.35 - Los Angeles, December 13, 1973
So we create that situation, and after death we become unconscious. And the superior agent, prakṛti, he takes you. Just like the air carries the flavor. You do not see how the air is passing and where the air is there, but it is there. You are smelling, "Oh, very good flavor," because the air is carrying. But you do not see. So these rascal scientists they think that because you cannot see, there is no soul. Subtle laws he doesn't know how the soul... Soul is so minute particle: ten-thousand, one ten-thousandth part of the top of the hair. How can your material science can see or understand? Therefore they say "No soul," but the soul is there, and he is being carried. He is being carried by nature's subtle intelligence, mind and ego. These are subtle material things. He is covered. As long he is in the material world, his subtle body..., the subtle body is being carried to another gross body. This is the, I mean to, science of transmigration of the soul.
So you are also changing body. We, everyone we have to change body. Similarly, advaitam acyutam anādim ananta-rūpam [Bs. 5.33]. Kṛṣṇa has got also ananta-rūpam. Our rūpam, our this form, is imitation of one of the forms of Kṛṣṇa. This is imitation. So but His forms are not like our form. His forms are spiritual. He is existing in different spiritual forms. Advaitam acyutam anādim ananta-rūpam [Bs. 5.33]. Ananta means unlimited. But every form is spiritual. So He is changing. He is changing, yathā naṭaḥ. He is changing like naṭaḥ. Naṭaḥ means actor, dramatic actor. Just like in the stage the dramatic actor is sometimes coming as a king and next time by changing the dress he is coming as (indistinct). This is an example. Similarly, Kṛṣṇa is the same but He has got different manifestations. That different manifestation He takes. Why? Bhū-bhāraḥ kṣapitaḥ. Bhū-bhāraḥ. He comes in different forms just to liquidate the burden of the earth, bhū-bhāraḥ. Bhū-bhāraḥ kṣapitaḥ, just to reduce the burden of this earth.