Whole mis-consciousness has come into existence due to this body. Because I am born in America, I am thinking American. And because I am thinking American, the American government claims, "Yes, you come and fight, give your life," draft board. Why? This body. Therefore the intelligent person should know that "I am suffering all miserable condition of my life due to this body."
So we should not act in such a way that this imprisonment with this material body will continue birth after birth, either American body, Indian body, dog's body, hog's body, so many—8,400,000's of body. That is called yoga, how to get out of this contamination of body. But the first instruction is to understand that "I am not this body." That is the basic principle of Bhagavad-gītā teaching. Aśocyān anvaśocas tvaṁ prajñā-vādāṁś ca bhāṣase (BG 2.11):
"My dear Arjuna, you are talking very nicely, just like a very advanced, learned man. But you are talking on the bodily platform—all nonsense, 'I am father of this. Oh, they are my relatives, they are my this, they are my this. How can I kill? How can I do? I cannot.' " The whole atmosphere consciousness is body.
Therefore Kṛṣṇa, just after Arjuna's accepting Him his spiritual master, He's immediately chastising him as a master chastises his disciple, "You nonsense, you are talking very wisely, as if you know so many things. But your position is this body."
So the whole world, they are posing themselves as highly advanced in education—science, philosophy, this, that, politics, so many things. But their position is this body. Just like, an example, a vulture. A vulture rises very high, seven miles, eight miles up. Wonderful. You cannot do that. And he has got wonderful eyes also. There are small eyes, vulture.