One who is not a divine nature or devotee of the Lord, he has no qualification. "Oh, he's M.A., Ph.D." No, he has no qualification. "Why?" Now, mano-rathena, he is simply speculating. He has no truth. How by speculation. . .? Every one of us, we are imperfect. We are very much proud of our eyes: "Can you show me?" What qualification your eyes have got that you can see? He does not think that, that "I have no qualification; still, I want to see." These eyes, oh, they are dependent on so many condition. Now there is electricity, you can see. As soon as there is electricity off, you cannot see. Then what is the value of your eyes? You cannot see what is going on beyond this wall.
So don't believe your so-called senses as the source of knowledge. No. The source of knowledge should be by hearing. That is called śruti. Therefore Vedas name is śruti. Śruti-pramāṇa, śruti-pramāṇa. Just like a child or a boy wants to know who is his father. So what is the evidence? That evidence is śruti, hearing, from the mother. Mother says, "He is your father." So he hears; he does not see how he became his father. Because before his body was constructed the father was there, now how could he see? So by seeing, you cannot ascertain who is your father. You have to hear from the authority. The mother is the authority. Therefore śruti-pramāṇa: the evidence is hearing; not by seeing. Seeing. . . Our imperfect eyes. . . There are so many obstacles. So similarly, by direct perception you cannot have the truth.