In the Brahma-saṁhitā we get this information: yasya prabhā prabhavato jagad-aṇḍa-koṭi. Jagad-aṇḍa. Jagad-aṇḍa means universes. Koṭi means innumerable, hundreds of thousands multiplied by another hundred, hundred, hundred. Lord Caitanya Mahāprabhu has said that this universe is a grain of mustard seed in the bag of a mustard seeds. Just imagine. Can anyone count what is the number of mustards seeds in a bag, in a one-ton or two-ton bag? Innumerable. It is beyond our experience. But there are so many universes just like packed up in a bag. This is called material world. So what to speak of the spiritual world? The spiritual world is at least three times greater than this material world. That information we get from Bhagavad-gītā. Ekāṁśena sthito... Ekam means one part. Even you take... One part, maybe, one hundred. But even not going so far, one part means divide the whole thing into four parts. That will be one fourth. This material world is only one fourth of the whole creation, and the three-fourth part is spiritual world. In the spiritual world there is similarly innumerable planets, innumerable living entities. Just like, as I have already explained, that this material world is the just like prison house of the criminals. So our criminal department in the state, say, jail or prison house, that is not the countrywise, as big as the country. That is a fractional part only. Maybe a few hundred people or few thousand people living there, but the state is very big. Similarly, the Lord's state is so big, though the criminal living entities are living in a corner only. This material world is in a corner. So what information we can get about God? "God is great," we simply theoretically say, but we do not know how great it is, He is, and how His greatness is working. That we do not know. But Kṛṣṇa conscious persons, because they are getting knowledge from Kṛṣṇa directly, they have got all this knowledge. Therefore their knowledge is perfect.
(reading:) "If one were to begin to study ISKCON techniques, what would he have to give up?" Give up... Give up means... First give up is that "I am this material body." The nonsense idea that "I am this body," that is the root of all misunderstanding. So he has to give up this bodily consciousness. That is naturally. That is the beginning of teachings of Kṛṣṇa consciousness. The Bhagavad-gītā teaches Arjuna. Arjuna was overwhelmed of family affection, that "How can I fight with my members of the family? They are my brothers..." So this conception, bodily conception, was first of all eradicated in the Bhagavad-gītā. He lectured... Arjuna was talking, arguing with Kṛṣṇa, that "If I kill my family, male members, the female members will be without husband, and they will be polluted, and there will be unwanted children and this on...," so many, as far as one can, materialistic person can think. So he was talking like that as very man of wisdom. So Kṛṣṇa first of all chastised him—not in the beginning, because in the beginning there was friendly talk, but when Arjuna surrendered unto Kṛṣṇa that "You don't take me as Your friend. I accept You as my spiritual master. So You teach me." This relationship of spiritual master and student... The student is called śiṣya. Śiṣya, the Sanskrit word śiṣya, this word comes from the root śas. Śas means ruling. From śas, the śāstra. Śāstra means authoritative books. They have been derived. And śastra. Śastra means weapons, armaments. That is called śastra. Just like sword, guns, they are called śastra. These two things are rulings. The state has got lawbooks, authoritative books, and one who does not obey the lawbooks, then the next word is gun and sword. This, these two words, means to accept authority. So śiṣya means one who accepts the authority of the spiritual master. He voluntarily accepts the rulings or the punishment of the spiritual master. That is called śiṣya. One voluntarily agrees to the spiritual master... This initiation is going on. This is the beginning of voluntary acceptance of the spiritual master. That means he agrees that he will abide by the orders of the spiritual master. This is called acceptance of spiritual master. Śiṣya. Śiṣya means voluntarily accepting the ruling. Everyone is free. If I give you some ruling, why should you accept it? Therefore this formal initiation ceremony is performed. He promises, "My dear sir, I shall abide by your order." So Kṛṣṇa was accepted by Arjuna as spiritual master just to teach him what is the actual duty in that warfield. So at that time the first śiṣya, śāsana, ruling: He chastised Arjuna by these words, "My dear Arjuna, you are talking just like a very learned man, but no learned man talks like this." That means "You are a fool." He very politely said that "You are talking with Me as if you are very learned man, but your subject matter is so third-class that no learned man takes this subject matter very seriously." What is that? Bodily conception of life. "You are talking just like a very learned man, but your center of activity is the body. So this is not a learn..., symptom of a learned man."