Devotee: "Full in scientific knowledge is Kṛṣṇa, and everything is revealed to the person in Kṛṣṇa consciousness. In complete Kṛṣṇa consciousness, one knows that Kṛṣṇa is the ultimate knowledge, beyond any doubts."
Prabhupāda: Now, here somebody may say that "This is too much sectarian, that knowing simply Kṛṣṇa, everything is known." Somebody may say like that. But actually this is the fact. The Vedic statement says like that. Kasmin tu bhagavo vijñāte sarvam idaṁ vijñātaṁ bhavati. If you can understand the origin, person, the original person... The Upaniṣad does not say directly, "The original person is Kṛṣṇa," simply because there are so many impersonalists. But the Upaniṣad gives hint that if you can understand the original person, kasmin... This is person. Kasmin vijñāte: "If one is able to understand the Supreme Person," sarvam idaṁ vijñātaṁ bhavati, "then everything becomes known." How? Suppose you want to know... Say I am a foreigner. If I want to know how this American government is going on, oh, I will have to study so many things. But somehow or other, if I made friendship with Mr. Nixon, the president, and if I sit down with him a few days, oh, everything is known. Is it not? Yes. He will disclose everything, that "My government is going on like this." You know. So this is a fact. If you try to understand or if you some way or other understand the original person, Kṛṣṇa, then you understand everything. That will be explained here. Simply by knowing Kṛṣṇa you will understand everything. This wonderful thing is in Kṛṣṇa consciousness. Simply try to understand what is Kṛṣṇa and you will gradually understand everything. This is the secret of Kṛṣṇa consciousness. And that's a fact. Go on.
Devotee: "Different types of yogas are only stepping stones on the path of Kṛṣṇa consciousness. One who takes directly to Kṛṣṇa consciousness automatically knows about brahmajyoti and Paramātmā in full."
Prabhupāda: Yes. Suppose... The same example. If you can understand the sun disc, then automatically you understand what is sunshine. But understanding sunshine, you cannot understand the sun disc. That is not possible. Therefore the origin should be understood. Root should be understood. Then everything will be under... That is knowledge. That will be explained in this chapter. Go on.
Devotee: "By practice of Kṛṣṇa consciousness yoga one can know everything in full, namely the Absolute Truth, the living entities, the material nature, and their manifestations with paraphernalia."
Prabhupāda: What you have to learn? What is knowledge? Five things you have to learn. What is your experience within this world? You have experience, this material nature. You are seeing this. That's a fact. And you are seeing also... (aside:) Thank you. Come on. You are experiencing also the living entities, so many living entities. That's a fact. So material nature is a fact, the living entities, they are also fact, and there is some controller of this material nature and the living entities. That is also fact. You cannot say that you are the controller or material nature is controller. There is a supreme controller. That is God. That is also another fact. And time. The... Everything is done within time. Time is also a different, relative measure according to the... Your time is different from the time of another animal or another living entity. Just like Brahmā's time. You cannot calculate one day of Brahmā because your time and his time is different. Similarly, a small microbic animal, his time and your time is different. So he cannot calculate your time. So time is relative.
So time, living entity, this material world, and the supreme controller, and activities. Every living entities are engaged in some activities. So you have to understand these five things which you are experiencing daily. So if you understand Kṛṣṇa, these five things will be automatically understood, and you will understand everything. By understanding one, Kṛṣṇa, you understand these five items. And by understanding these five items, you understand the whole thing. That's all. That means you have complete knowledge. So Bhagavad-gītā explains like that. Kasmin vijñāte sarvaṁ vijñātaṁ bhavati. Everything becomes known by understanding the Supreme. That is our program. Go on.