There are three kinds of distresses: adhyātmika, adhibhautika, adhidaivika. Adhyātmika means distresses pertaining to this body and the mind. And adhidaivika means distresses offered by material nature. Nature. All of a sudden there is earthquake. All of a sudden there is famine, there is scarcity of food, there is over rain, no rain, extreme heat, extreme winter, extreme cold. We have to go under these distresses, threefold. At least one, two, must be there. Still, we do not realize that "This place is full of distress because I have got this material body."
Therefore a sane man's duty is how to stop the process of accepting this material body. This is intelligence. He should realize that "I am always in distresses, and I am not this body, but I am put into this body. Therefore right conclusion is that I am not this body. If, somehow or other, I can live without this body, then my distresses are over. This is common sense. That is possible. Therefore Kṛṣṇa comes. Therefore God comes, to give you the information that "You are not this body. You are the soul, spirit soul. And because you are within this body, you are suffering so many distresses." Therefore Kṛṣṇa advises that "These distresses are due to this body." Try to understand. Why you are feeling pains and pleasure? It is due to the body.
Therefore Buddha philosophy is also same thing, that you finish this body, nirvāṇa, nirvāṇa. Nirvāṇa means... Their philosophy is that your feeling of pains and pleasure, it is due to this body. They also accept. Now what is this body? This body is combination of matter. Combination of earth, water, air, fire, ether, mind, intelligence, ego—eight material elements, five gross and three subtle. This body is made of that. So the Buddha philosophy is that you dismantle this body, nirvāṇa. Just like this house is made of stone, brick and wood and so many. So you break it, and there is no more stone and no more brick. This is distributed to the earth. Throw it on the earth. Then there is no house. Similarly, if you become zero, no body, then you are free from pains and pleasure. This is their philosophy, nirvāṇa philosophy, śūnyavādi: "Make it zero." But that is not possible. That is not possible. You cannot... Because you are spirit soul... That will be explained. You are eternal. You cannot be zero. That will be explained, na hanyate hanyamāne śarīre (BG 2.20), that we are giving up this body, but immediately I have to accept another body, immediately. Then where is your question of dismantling? By nature's way you will get another body. Because you want to enjoy, you have come here in this material world. There is no question of asking. Everyone knows that "I am in this material world. I must enjoy to the fullest extent." One who is unaware of the fact that "I am going to take another life," he is thinking, "This is a combination of this matter—earth, water, air, fire. So when it will be broken, then everything will be finished. So so long I have got this opportunity, let me enjoy to the fullest extent." This is called material mentality, atheist, atheist, who does not know that we are eternal soul, we are changing body only. The atheists think that after finishing...
Here in the Western country, big, big professor, they are also under the same impression, that when the body is finished, everything is finished. No. That is not. Therefore that is the beginning of instruction. Dehino 'smin yathā dehe kaumāraṁ yauvanaṁ jarā (BG 2.13). You are changing different bodies. By finishing the body, you are not finished. You are not finished. We can understand with little thinking that in this body I am..., even in this life. At night I get another body. I dream. I dream there is tiger. I go to the forest, and there is a tiger, and it is coming to kill me. Then I am crying, and actually I am crying. Or, in other way, I have gone to some beloved, man and woman. We are embracing, but the bodily action is going on. Otherwise why I am crying? And why there is discharge of semina? So people do not know that I am leaving this gross body, but I am entering into subtle body. Subtle body is there, not question of inside. We are packed up. Just like this body is packed up with shirt and coat, so the coat is the gross body, and the shirt is the subtle body. So when this gross body is resting, the subtle body is working. The subtle body is there. The foolish men, they cannot understand that "I am compact in some body, either subtle body or gross body." One who is too sinful, very much sinful, he does not get the gross body. He remains in the subtle body, and that is called ghost. You have heard. Some of you might have seen. There is ghost. Ghost means he doesn't get. He is so sinful that he is condemned to remain in the subtle body. He does not get the gross body. Therefore, according to Vedic system, there is śrāddha ceremony. If the father or relative has not gotten the gross body, by that ceremony he is allowed to accept a gross body. That is the Vedic system.
So anyway, we can understand that "I am sometimes in this gross body, and I am sometimes in the subtle body. So I am there, either in the gross body or in the subtle body. So I am eternal. But when I work with the subtle body, I forget this gross body. And when I work with this gross body, I forget this subtle body. So either I accept the gross body or subtle body, I am eternal. I am eternal. Now the problem is how to avoid this gross body and subtle body. That is problem. That means when you remain in your original body, means spiritual body, and do not come to this gross or subtle body, that is your eternal life. That is... We have to achieve. This human life is a gift by the nature or by God. Now you realize that you are changing your different condition, distress and happiness, being forced to accept some kind of gross and subtle body. That is the cause of your pains and pleasure. And if you get out of this gross and subtle body, remain in your original, spiritual body, then you are free from these pains and pleasure. That is called mukti. Mukti. There is a Sanskrit word. Mukti means liberation, no more gross body, no more subtle body. But you remain in your own original spiritual body. This is called mukti. Mukti means... It is described in the Bhāgavatam, muktir hitvā anyathā rūpaṁ sva-rūpeṇa vyavasthitiḥ. That is called mukti. Anyathā rūpam. Anyathā rūpam means in otherwise, staying or living in otherwise. Otherwise means that I am spirit soul. I have got spiritual body. But some way or other, circumstantially, on account of my desire, I get sometimes human body and sometimes dog's body, sometimes cat's body, sometimes tree's body, sometimes demigod's body. There are different, 8,400,000 different forms of body. So I am changing according to my desire. And according to my infection, kāraṇaṁ guṇa-saṅgaḥ asya, and according to my... These are the subtle things. That is the real knowledge of human being, not to invent something for temporary happiness. That is foolishness. That is foolishness, wasting time. If we invent something for the comforts of this present body and I shall live very comfortably, but "You will not be allowed, sir, to live comfortably." First of all you know it. Suppose a man is constructing very nice house, very strong house. It will never fall down in any circumstances. But that's all right, but what you have done for yourself that you will never die so that you will enjoy this? "No. Let it be. Let me have a very strong-built house." So house remains. You go there. Strong-built nation. Just like Napoleon constructed strong-built arches, but where he has gone, nobody knows. So therefore Bhaktivinoda Ṭhākura says, sings, jaḍa-bidyā jato māyāra vaibhava tomāra bhajane bādhā. The more we advance in so-called material happiness or material advancement, the more we forget our real identity. This is the result.
So we should understand that we have got a separate business, real business. That is called self-realization, that "I am not this body." This is self-realization. That is being instructed by Kṛṣṇa in the beginning, that "You are not this body." The first understanding, first knowledge, is to understand that "I am not this body. I am spirit soul. I have got a different business." It is not that this temporary actions or activities like as a dog, or as a human being, or as a tiger or as a tree or as a fish, there are activities. Āhāra-nidrā-bhaya-maithunaṁ ca. The same principle of bodily necessities. Eating, sleeping, sex life and defense. But in the human form of life, I have got a separate business, self-realization, to get out of this bodily entanglement. And that is called knowledge. Without this knowledge, anything we are advancing in knowledge, that is foolishness, that's all. Śrama eva hi kevalam (SB 1.2.8).