The soul is within this body. He is transmigrating from one type of body to another. This is fact. If we ponder over this, we shall find it is fact. So we take it as it is. That is our method of knowledge—very simple. We simplify the matter. Now if you want to research scientifically . . . actually they are researching, but they could not find, the medical science. They are . . . a dead man, a man who is going to die, he is giving all kinds of injections and all types of jabs, and taking all care. In spite of all that, everything, oh, the man is dead. Finished. Now ask them what is finished, they cannot say. They say, "Yes. We do not know." But you should know. You cannot say that the blood has turned from redness to whiteness; therefore he is dead. No. You are scientifically advanced; you can turn the blood into red. Not that . . . the redness is not life, because there are so many red, natural. Just like a flower, red flower; it is not living. It has no life. So redness, you cannot put this logic that redness, red corpuscles, is the source of life. You cannot say that this dead body is dead because some chemical is missing. That is, that also you cannot say because that chemical . . . if you say that there is chemical which is giving life, that chemical is already there, because after two minutes you will find that as soon as the body is decomposed many living entities are coming out. So the life-giving chemical is there. You cannot say the chemical is wanting. Or if you say the chemical is wanting, then bring that chemical, put it into it and make it alive. That is not possible.
So we cannot accept this defective knowledge. Our knowledge is from Kṛṣṇa. We accept that this body is dead because the soul has passed to another body. This is perfect knowledge. Now when you come to this knowledge—perfectly—that "I am not this body; I am soul," that is called a brahma-bhūta state, ahaṁ brahmāsmi—Brahman realization, or spiritual realization. This is Vedic civilization—to give chance, everyone, how to realize that Brahman.