So this Kṛṣṇa consciousness movement is preaching the important portion of the body—about the soul. To understand what is the soul, to understand what is the need of the soul, why he is entrapped within this material body, how the soul can be liberated, and after liberation, what is the function of the soul—these things are our subject matter. And these things are very nicely explained as preliminary study in the Bhagavad-gītā, and for higher study, for graduate study, in the Śrīmad-Bhāgavatam.
So our only request is that you are all students—you do not neglect this subject matter, this science to understand what is the soul. It is a fact. No scientific professor at the present moment can explain what is that thing missing, when this thing is missing, this body is called dead. What is the distinction of this dead body and the living body? So according to Vedic instruction, according to Kṛṣṇa's instruction, the body is always dead. But so long the soul is there, it appears to be living. Just like within your coat and shirt, so long you are there, the hand of your coat appears to be moving. Actually, the shirt or coat has no body, but because the original body is moving we see the shirt and coat is also moving. Similarly, this body is moving because the soul within, it is moving. As soon as the soul is out of this body, this body will not move.
So this science is very important science. That is the basic principle of understanding. It is not the question of thinking that one may believe in the existence of soul or one may not believe. But fact is fact. "Two plus two equal to four"—that is science. If somebody does not believe, if somebody says, "Two plus two equal to five" or "three," that is not scientist. Similarly, we may not believe in the existence of soul, but that is a fact. But if we want to study the subject matter very seriously and scientifically, then it will be possible to understand.But the simple method recommended in the Vedic literature, that if you chant this Hare Kṛṣṇa, mantra then gradually your intelligence or consciousness will be cleansed, and you will be able to understand that you are not this body, that you are spirit soul . . .