This is stated in the Bhagavad-gita:
hrd-dese 'rjuna tisthati
So isvara, the Supreme Lord, is there. Now He's giving chance, "You living entity, you did not surrender to Me. You wanted to enjoy this material world. So you take this chariot and take this driver and go on." This is going on. Krsna is very kind. Ye yatha mam prapadyante. "Whatever you want, you do it. But you'll never be happy." That is the point. "You can do whatever. I will give you chance. I'll give you." Just like you want a Rolls Royce car. "All right, it is." If you want this car, "All right." So you are changing this car. Sometimes you are carried by the doggish cars, sometimes goddish car. These are all cars, but we are different from the car. We wanted to sit down in a certain car, so Krsna is giving us the chance. Bhramayan sarva-bhutani yantrarudhani [Bg. 18.61]. Yantra means car or machine. It is very easy to understand. So this is going on because we are identifying with the car. Just like foolish man, if he rides on a Rolls Royce car, he's thinking "Now I am very rich man. I have bought a Rolls Royce." Similarly, if one body has got inferior car, he thinks that "I am poor"; identifying with the car.
But he's not car. He's different from car. This knowledge is required. This is called visoko brahma-sampattya. When we understand our spiritual identity, then we are no more lamenting or jubilation, equalit... equilibrium. Read the purport. It is very important verse.
Pradyumna: "Doubts of duality begin from the misconception of the material body, which is accepted as the self by less intelligent persons. The most foolish part of our ignorance..."
Prabhupada: That we were discussing in our walking, that the basic principle of this modern civilization is wrong. Everyone, the so-called advanced scientists, so-called advanced philosopher or politician, everyone is thinking that "I am this body." So on the basic principle they're wrong. Therefore the so-called advancement of civilization is wrong. It's... At one point mathematical calculation, if you have done mistake in one point... Two plus two equal two. Why if you have made up three, the mistake, then the whole calculation will be mistaken. The balance, it will never tally. Similarly, our present civilization... Not present; it is always there. Now it is very strong bodily conception of life, so the basic principle is wrong. Therefore what..., whatever we are advancing, that is wrong. Parabhava That is stated in the Srimad-Bhagavatam. Parabhavas Basic principle is wrong, abodha, in ignorance. In ignorance. Abodha means without any perfect knowledge.
So we are born without any perfect knowledge. That is natural. We have to sent..., we have to be sent to school for learning. Therefore these books are there. Why for these books are being written? Just for the learning of the human society. So they can learn it. Cats and dogs cannot read these Bhagavata or Bhagavad-gita. It is meant for human society. So they should take advantage of this knowledge. But if they remain in the darkness of ignorance, then what is the meaning of their advancement? It has no meaning. So that is going on. They too do not accept knowledge from the authority. They manufacture. How you can manufacture? You are a fool, so whatever you manufacture, so-called knowledge, that is also foolish. How can we depend on your foolish knowledge? Abodha-jata. Everyone is fool. He cannot manufacture. He has to learn to take knowledge from a person who knows. The he's perfect. That is our system. We are taking knowledge from Krsna. We are taking knowledge is perfect. We are taking authority. As we are, we are defective. Our position is sometimes we do mistake -- "two plus two equals five." But it is not fact. So two plus two must be four. But if we make "five" or "three," that means the whole background becomes wrong. That is... we are liable to do that mistake. And illusion. Illusion means two plus two equal to four; I have written "five," but I am seeing it is all right. I'm seeing it is all right: "two." Therefore one should not correct himself. Another person should take the editorial correction work, because the man who has written he sees that it is right. This is called illusion. [Srila Prabhupada, Lecture, Srimad-Bhagavatam 1.15.31 -- Los Angeles, December 9, 197]