There are two kinds of processes of acquiring knowledge. One process is deductive, and the other process is inductive. Those who are student of logic, you know that there are two processes: deductive knowledge and inductive knowledge. Deductive knowledge is considered to be more perfect. And what is that? Just like "Man is mortal." This is a truth, accepted. How man is mortal, nobody's going to enter into discussion. It is accepted that man is mortal. Now, Mr. Johnson is a man. So he is mortal. This is the deductive conclusion. Because man is mortal and Johnson is a man, therefore he's mortal. This is the process of deductive knowledge. Now, how this man is mortal, this truth established? The other party, those who are inductive, follower of inductive process, they want to see actually by experiment and observation how man is mortal. They want to study, "This man dies. That man dies. That man dies. That man dies." Therefore they make a general conclusion, "Well, all men are mortal."
Now, in the inductive process you have got some defects. What is that? Now, your experience is limited. Suppose if you have not seen a man who is not mortal, who is not mortal. There may be. Because you are going on with your personal experience, but your personal experience is always imperfect. That I have already discussed. Because we have got our senses with limited power. And there are so many defects in our conditioned stage. Therefore inductive process is not always perfect. The deductive process, from the authority, the knowledge received, is always perfect. So Vedic process is deductive process. Vedic process is deductive process.
You'll find so many verses in the Bhagavad-gītā which may appear to be dogmatic. The Lord says that mattaḥ parataraṁ nānyat kiñcid asti dhanañjaya: (BG 7.7) "My dear Arjuna, there is nobody else greater than Me. There is no greater authority than Me." Kṛṣṇa says. Now, apparently, it appears very dogmatic. Suppose if I say before you that, "There is nobody greater than me," oh, you'll think, "Oh, Swamiji is very proud." Yes. If a man like me, who is conditioned by so many, I mean to say, restrictions, if I say that I am the greatest of all, that is a blasphemy. I cannot say that. But Kṛṣṇa can say. Because the history of life from Kṛṣṇa, we can understand that actually He was the greatest personality. At least, during His time, He was the greatest personality in every field of activities. Now knowledge received from the greatest personality, greatest authority, is, according to Vedic system, that is accepted as perfect.