Prabhupada's lecture - Śrīmad-Bhāgavatam 1.3.24 - Los Angeles, September 29, 1972
So we accept knowledge from such person who knows past, present, and future. Persons who do not know even present, what is going on, how we can accept knowledge from him? This is not our process. Our process is to receive knowledge from a person who knows past, present and future. Just like Kṛṣṇa and the ācāryas. They know. So our knowledge is perfect because we are receiving knowledge from the perfect as it is. Therefore our knowledge... It is not that I am perfect. I may not be perfect; I may be perfect. But because I am accepting the perfect knowledge, therefore whatever I speak on that basis, that is perfect. This is our process. You don't require to research. What research you will make? You are yourself insufficient. What research you can make? Your senses are insufficient. You try to see the cosmic manifestation with your microscope or telescope, but that is also manufactured by you. You are imperfect, so whatever you have done, that is all imperfect. How you can know? If you are imperfect...
The four defects of the conditioned soul... One is sure to commit mistake. Anyone, any big man of this world, he must commit mistake. He is illusioned. He is accepting something for something. Every one of us, we accept this body as "I am," self. And we are fighting on this basis. "I am American, you are Indian," "You are Hindu, I am Muslim." Only on this bodily concept of life. But Bhāgavata says, as soon as we find a person on the platform of bodily concept of life, he is animal. That's all. Sa eva go-kharaḥ [SB 10.84.13]. Go-kharaḥ. Go means cow, khara means ass. So anyone who is under the bodily concept of life, he is fool, rascal. That's all.