Now, at the present moment, there are so many gurus. How we will understand who is perfect? That is also another problem. So that perfection is . . . that I have already explained, that the child who has heard from his father that "This is microphone," and if he speaks that "This is microphone," then his knowledge is perfect. The child is not perfect, but because he has heard from the perfect authority, what he is speaking, although he is child, that is perfect. Similarly, this guru means who has heard from the perfect person. Therefore his knowledge is perfect, because he has heard. This is called paramparā system, or disciplic succession.
In this Bhagavad-gītā you will find in the Fourth Chapter Kṛṣṇa says, evaṁ paramparā-prāptam imaṁ rājarṣayo viduḥ (BG 4.2). Paramparā. Kṛṣṇa is the original person, perfect, and He says:
- imaṁ vivasvate yogaṁ
- proktavān aham avyayam
- vivasvān manave prāha
- manur ikṣvākave 'bravīt
- (BG 4.1)
- evaṁ paramparā-prāptam
- imaṁ rājarṣayo viduḥ
- sa kāleneha . . .
- yogo naṣṭaḥ parantapa
- (BG 4.2)
Kṛṣṇa is explaining to Arjuna. You will find these statement in the Fourth Chapter of Bhagavad-gītā. Kṛṣṇa said that "This perfect knowledge of yoga system as I am explaining in this . . ." Now it is known, Bhagavad-gītā. Bhagavad-gītā means the . . . generally in this Western world they say, "Song of God." So Bhagavad-gītā is spoken by the Supreme Personality of Godhead. So He said that "This is not a new literature. Millions of years ago I spoke about this yoga system, imaṁ vivasvate yogaṁ proktavān . . . (BG 4.1). Proktavān means, "I said." Whom? Vivasvān. Vivasvān is the name of the sun-god, or the president of the sun planet. Just like here in this planet we have got presidents in each country. So now there are so many presidents. Formerly, even on this planet there was one president. They are trying to be united. The United Nation Organization, they want to unite. For the last twenty years the United Nations are trying to unite, but the result is we are disunited. Instead of making one flag, the flags are increasing every year: "This is Pakistan, this is Hindustan, this is this, this is that, this is . . ." They are not united. How they can be united? They cannot be united, because prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ (BG 3.27), everyone is under the control of the material nature, full control.
So, so long we are in the material world, controlled by the external, material energy, there is no possibility of unity. That is not possible.