To the qualified physician, not to the storekeeper. Similarly, first thing is, when you want to solve the problem, you must go to the right person. First of all you have to select. So we understand that Kṛṣṇa is the right person. So therefore, it is guaranteed. He knows everything. Others, they do not know. May know to some extent; not perfect. The first thing is that we have to select from whom. Tad-vijñānārthaṁ sa gurum evābhigacchet (MU 1.2.12). In Vedas it is stated in order to solve the problem or to understand the situation, you should go to the guru. So who can be better than Kṛṣṇa as guru? He taught, He gave lesson to Brahmā, the original living being in this universe. Tene brahma hṛdā. He gave lesson to Brahmā how to create. Therefore, who can be better guru than Kṛṣṇa? Or even Brahmā. Brahmā, . . . (indistinct) . . . he has created this universe, but He taught Brahmā. And Kṛṣṇa is accepted the supreme guru. To take instruction from Him or His pure representative, that is wanted. Otherwise, there will be trouble. You cannot compare any ordinary person with Kṛṣṇa. Kṛṣṇa is the original guru, instructor. You do not know about Kṛṣṇa, that is a different thing. But if you want to solve your problems, you must approach the guru. That is the Vedic instruction. Tad-vijñānārthaṁ sa gurum evābhigacchet (MU 1.2.12). This verb is used when you must: no excuse, gacchet, vidhi-liṅ. In Sanskrit there are different forms of verb. So when vidhi-liṅ is used, that means you must. There is no question of alternative. You must.
So Kṛṣṇa is the original guru. Tene brahma ādi-kavaye, ādi-kavi. Ādi-kavaye means ādi-kavi, the original learned scholar. How much brain he has that he has created this universe, Brahmā. He has created the demigods, he has created the planets, so who can . . . (indistinct) . . .? And he was instructed by Kṛṣṇa. So who can be better guru than Him? And so far you are concerned, you cannot . . . (indistinct) . . . you have not solved any question. Therefore required, they say, revolution. Problem is not solved. We are accepting one wrong process, and after going through it for some time, we want to change it. That is not solution. That means you do not know how to make it solved; you're simply trying this method, that method, this method, that method. That is . . . (indistinct) . . . that is not perfect. But because you cannot solve, therefore you say that a periodical revolution is required, because you have no solution. You do not know how to solve, but you accept some process for some time, and when you see it is useless, you make revolution, another . . . (indistinct) . . . imperfect. This is called punaḥ punaś carvita-carvaṇānām (SB 7.5.30). Practically we see that. There is sex.