Prabhupada's lecture - Śrīmad-Bhāgavatam 1.15.31 - Los Angeles, December 9, 1973
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 Bhāgavata or Bhagavad-gītā. 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-jāta.
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 Kṛṣṇa. 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.