So the body is changing. Dehino 'smin yatha dehe kaumaram yauvanam jara [Bg. 2.13]. Kaumaram means boyhood. Yauvanam means youthhood, and jara means old age, aged body. So I can remember, I am an old man, I can remember, I had a boy's body, I had a young man's body. Now I have got this aged body. So although the boyhood body, the youthhood body are no longer existing, but I am existing. That's a fact. Everyone can understand. He has got past, present, and future. You are all young boys and girls present here. So you had your past body as boyhood, childhood. Similarly, you have got your future body. That is awaiting. I have got it, you are awaiting. So past, future, past, present, and future, relatively we can understand in any condition of life. Therefore the conclusion is that when this aged body as I have got now... I am seventy-seven years old. So when this body will be finished, I'll get another body. As I have got consecutively from boyhood to childhood, childhood, I have, from childhood to boyhood, boyhood to youthhood, aged body, so why not next body? This is simple truth, that the living entity, or the soul, is transmigrating from one body to another. This is the basic principle of spiritual understanding. The vital force of the body is the spirit soul. It is not a mechanical arrangement of matter. The modern so-called scientists, they think that the body is combination of matter and, at a certain stage, these combination of matter develop living symptoms. But that is not a fact. If it is a fact, then the scientists can manufacture with chemicals a living body. But a scientist even up to date is unable to manufacture even a body like an ant, and what to speak of other, bigger animals.

So we have to take this knowledge from authority. Here is Krsna speaking. He's authority. We accept Krsna: the Supreme Personality of Godhead. His knowledge is perfect. He knows past, present, and future. Therefore, He is teaching Arjuna, "My dear Arjuna, the spirit soul within this body is eternal." That's a fact. Just like I can understand, I was in the past, I am in present, so I must be in the future. These are three phases of time, past, present, and future. In another place, we read in this Bhagavad-gita, na jayate na mriyate va kadacit. The living entity is never born; neither it dies. Na jayate means he never takes birth. Na jayate na mriyate, it never dies. Nityam sasvato 'yam, na hanyate hanyamane sarire [Bg. 2.20]. It is eternal, sasvata, existing forever. Na hanyate hanyamane sarire [Bg. 2.20]. By annihilation of this body, the soul does not die. Because... This is also confirmed in the Upanisads, Vedas: nityo nityanam cetanas cetananam eko bahunam vidadhati kaman. The God is also eternal, and we are also eternal. We are part and parcels of God. Just like gold and fragments of gold; both of them are gold. Although I am fragment, a particle of gold or the spirit, still, I am spirit. So we get this information that both God and we, living entities, we are eternal. Nityo nityanam, nitya means eternal.

So two words are there. One is singular number, nitya, eternal, and the other is plural number, nityanam. So we are plural number. Plural number eternals. We do not know what is the numerical strength of the living entities. They are described as asankhya. Asankhya means without any counting capacity. Millions and trillions. Then what is the difference between this singular number and the plural number? The plural number is dependent on the singular number. Eko bahunam vidadhati kaman. The singular number eternal is giving all the necessities of life to the plural number, we living entities. That's a fact, we can examine by our intelligence. Out of 8,400,000 different forms of life, we civilized human beings are very few. But others, their number is very great. Just like in the water. Jalaja nava-laksani. There are 900,000 species of life within the water. Sthavara laksa-vimsati; and 2,000,000 different forms of life in the vegetable kingdom, plants and trees. Jalaja nava-laksani sthavara laksa-vimsati, krmayo rudra-sankhyayah. And the insects, they are 110,000 different species of form. Krmayo rudra-sankhyayah paksinam dasa-laksanam. And birds, they are 1,000,000 species of forms. Then beasts, pasavas trimsa-laksani, 3,000,000 types of animals, four-legged. And catur-laksani manusah, and the human being the forms are 400,000. Out of them, most of them are uncivilized.

So we civilized human beingsnever mind American or Indian or German or Englishman, it doesn't matterwe are very few. So we have got economic problems. We are trying for developing our economic condition. What is that economic condition? Eating, sleeping, mating, and defending. We are busy always, but the animals are also busy for eating, sleeping, mating, and defending, but they have no problem. We have got problems. So just try to understand, if the major portion of the living entities have no problem... Their necessities of life are being supplied by the supreme eternal, God. Just like an elephant. There are millions of elephants in African jungle. They eat at a time fifty kilos. But they're getting their food. Similarly, a small ant, it requires a grain of sugar. So he's also getting his food. So the supreme eternal has arranged food, or the economic problems are solved by nature. They do not do any business, they do not go to school or colleges to learn technology, to earn livelihood, but they are being supplied. They are healthy. There is no disease.

So our advancement of civilization means we have created problems. That's all. This is our advancement of civilization, and we do not know what is the formation of the soul, how it is transmigrating from one body to another, what is the next life, whether we are getting next life a human being or better than human being, or lower than human being. And if it so, how we are getting that form of life next? Because we are eternal, we are changing this body. Neither we do know there are two kinds of bodies: the gross body and the subtle body. This gross body is made of earth, water, fire, air, ether; and the subtle body is made of mind, intelligence, and ego. Within the subtle body, the soul is there. Now, when this gross body becomes useless or unworkable, then the subtle body carries me to another gross body. This is called transmigration of the soul. But we do not see the subtle body. Every one of us, we know that we, we have got mind, but we cannot see the mind. Neither we can see intelligence, neither I can see what is my ego. But they are existing. So it is not necessary that everything you have to see with your blunt eyes. The eyes, they are not perfect. Just like the other side of this hall is dark, I cannot see you. Although I have got the eyes. So even though we have got eyes, it is very imperfect. It cannot see in all circumstances. Under certain circumstances, we can see. Therefore we should not believe simply by seeing. But one thing, although I cannot see you, you can hear me, or I can understand that you are hearing. The ears are stronger than the eyes. So things which is beyond our experience, we can hear about. Even though we cannot see, it does not mean there is no existence of things. The same example: even though I cannot see what is mind, what is intelligence, what is ego, but I can hear about it. Therefore perfect knowledge is acquired by hearing. So we accept knowledge, perfect knowledge, by hearing. Another example: suppose a man is sleeping. At that time, if somebody is coming to kill him, he's sleeping, he does not know. But if some of his friend warns him, "My dear Mr. Such-and-such, somebody is coming to kill you. Wake up!" he can hear, and he can wake up and take precaution. Therefore, when our other senses cannot work, our ear is very strong. Therefore it is recommended that you try to hear from the authoritative person. That is also... Educational system is also like that. Why do you come to university, school, and college? To hear from an experienced professor. He knows, and you acquire the knowledge by hearing.

So the process of hearing is very important. So our this Krsna consciousness movement is to propagate that "You hear from the authority, Krsna." Krsna is the Supreme Personality of Godhead. It is accepted in the present age and in the past age. In the past age, great sages like Narada, Vyasa, Asita, Devala, very, very great stalwart scholars and sages, they accepted. In the Middle Age, say 1,500 years ago, all the acaryas like Sankaracarya, Ramanujacarya, Madhvacarya, Nimbarka... Practically, Indian Vedic civilization, it is still existing on the authority of these acaryas. And it is recommended in the Bhagavad-gita: acaryopasanam. If you want to learn factually things, then you should approach acarya. Acaryavan puruso veda, "One who has accepted acarya, he knows things as they are." Acaryavan puruso veda. So we are receiving knowledge through the acaryas. Krsna spoke to Arjuna, Arjuna spoke to Vyasadeva. Arjuna actually did not speak to Vyasadeva, but Vyasadeva heard it, Krsna speaking, and he noted down in his book Mahabharata. This Bhagavad-gita is found in Mahabharata. So we accept the authorities of Vyasa. And from Vyasa, Madhvacarya; from Madhvacarya, so many disciplic succession, up to Madhavendra Puri. Then Madhavendra Puri to Isvara Puri; from Isvara Puri to Lord Caitanyadeva; from Lord Caitanyadeva to six Gosvamis; from six Gosvamis to Krsnadasa Kaviraja; from him, Srinivasa Acarya; from him, Visvanatha Cakravarti; from him, Jagannatha dasa Babaji; then Gaura Kisora dasa Babaji; Bhaktivinoda Thakura; my spiritual master. The same thing, we are preaching. That is Krsna consciousness movement. It is nothing new. It is coming down from the original speaker, Krsna, by disciplic succession. So we are reading this Bhagavad-gita. Not that I have manufactured some book and I am preaching. No. I am preaching Bhagavad-gita. The same Bhagavad-gita as it was first spoken forty millions of years ago to the sun-god and again it was repeated five thousand years ago to Arjuna. The same thing is coming down by disciplic succession, and the same thing is presented before you. There is no change.

So the authority says,

So in order to understand... Just like Krsna is teaching Arjuna. Before this, Krsna surrendered himself. Sisyas te 'ham sadhi mam prapannam [Bg. 2.7]. Although they were friends, Krsna and Arjuna were friends... First of all, they were talking like friends, and Arjuna was arguing with Krsna. This argument has no value because if I am imperfect, what is the meaning of my argument? Whatever I shall argue, that is also imperfect. So what is the use of wasting time by imperfect argument? This is not process. The process is that we must approach to a perfect person and take his instruction as it is. Then our knowledge is perfect. Without any argument. We accept Vedic knowledge like that. For example, just like stool of an animal. It is stated in the Vedic literature that it is impure. If you touch stool... According to Vedic system, even after passing my own stool, evacuating, I have to take bath. And what to speak of others' stool. That is the system. So stool is impure. One, after touching stool, he must take bath. This is Vedic injunction. But in another place it is said that the stool of the cow is pure, and if cow dung is applied in some impure place, it will be pure. Now, by your argument, you can say that "The stool of an animal is impure. Why it is said in one place pure and in another place impure? This is contradiction." But this is not contradiction. You practically make experiment. You take cow dung and apply anywhere, you'll find it is pure. Immediately purified. So this is Vedic injunction. They are perfect knowledge. We... Instead of wasting time arguing and putting forward false prestige, if you simply accept the perfect knowledge, as they are stated in the Vedic literature, then we get perfect knowledge and our life is success. Instead of making experiment on the body to find out where is the soul... The soul is there, but it is so small that it is not possible to see by your these blunt eyes. Any microscope or any machine, because it is stated it is one ten-thousandth part of the top of the tip of the hair. So there is no machine. You cannot see. But it is there. Otherwise, how we can find distinction between the dead body and the living body?

So here, the perfect knowledge is spoken by Krsna:

Now, how the soul is transmigrating? Suppose after this life, I get better life, that's nice. But if I get lower life, then what is the condition? Suppose next life I get the life of a cat or dog or cow. Suppose you get again birth in America. But if you change your body, then whole circumstances change. As human being, you are given all protection by the state, but as soon as you become another body, either tree or animals, the treatment is different. Animal is going to the slaughterhouse; trees are being cut out. There is no protest. So this is the condition of material life. Sometimes we are getting better condition of life, sometimes we are getting lower condition of life. There is no guarantee. That will depend on my work. That is practical. In this life also, if you become educated, then your future is very nice. If you are not educated, then your future is not so bright. Similarly, this human form of life, we can make a solution of this repeated birth and death. And that is the only business of human form of life, how to get out of these material conditions of life: birth, death, old age, and disease. We can make solution. And that solution is Krsna consciousness. As soon as we become Krsna conscious... Krsna conscious means Krsna, the Supreme, He, Lord, God. We are part and parcel of Krsna. This is Krsna consciousness. Simply to understand that... Just like you understand your father, and your brothers and yourself. You are all sons of the father. So it is not difficult to understand. As father maintains the whole family, similarly, Krsna, the Supreme Lord, or God, He has many innumerable sons, living entities, and He is maintaining the whole body, whole family. What is the difficulty? Then next duty is to become developed consciousness. Just like a good son, when he feels that "Father has done so much for me. I must repay it, or at least I must accept obligation what my father has done for me," this much feeling is called Krsna consciousness. So to become Krsna conscious, we require to understand three things only:

Therefore we are trying to spread this Krsna consciousness movement for total benefit of the human society. We request the intelligent persons, especially the student community, to join this movement, to try to understand scientifically what is this movement. We have got many books, at least two dozen books, big, big, voluminous. So you can read them, you can try to understand this movement, and join with us.

Thank you very much. Hare Krsna.