Kṛṣṇa says that "I am this and that." He says, raso 'ham apsu kaunteya (BG 7.8). Those who are sober, those who want to understand Kṛṣṇa, they can understand Kṛṣṇa in every step of life. Just like raso 'ham apsu kaunteya, "I am the taste of the water." Water you have to drink. Just like I drank just a minute before and quenched my thirst. But that quenching active principle is Kṛṣṇa. So we can realize Kṛṣṇa every time we'll drink water. This is Kṛṣṇa consciousness. Śās . . . prabhāsmi śaśi sūryayoḥ. Kṛṣṇa is the sunshine, Kṛṣṇa is the moonshine. Kṛṣṇa is the fragrance of the flower. As soon as you take a flower and smell it, the fragrance is Kṛṣṇa.
In this way, every step we can understand Kṛṣṇa. Even in sex life we can understand Kṛṣṇa. That is also stated in the Bhagavad-gītā: dharmāviruddho kāmo 'smi (BG 7.11), sex life which is not against the religious codes. What is that? Sex life for begetting children is allowed. That is not against the religious code, and that is Kṛṣṇa. Kṛṣṇa says, dharmāviruddho kāmo 'smi. Kāma, lust. Sex life is the business of lust. Kṛṣṇa says, "Yes, lust is also good provided it is not against the religious codes."
So nothing is bad; everything is good, if it is for developing our Kṛṣṇa consciousness. Nothing is bad, because everything is creation of Kṛṣṇa. How it can be bad? It cannot be bad; it is good, provided we follow the rules and regulations. Everything is good. Therefore we require to consult various śāstras. Nana-śāstra-vicaraṇaika-nipunau, vicāra. Vicāra means to study them with careful attention. Vicāra. Nana-śās . . .
So these Gosvāmīs were studying many kinds of Vedic literatures. There are hundreds and thousands of Vedic literature—primarily four Vedas: Sama, Yajur, Atharva . . . Ṛg, Atharva. Then from the Vedas, there are supplementary Vedas, which are called Purāṇas, eighteen Purāṇas. Śrīmad-Bhāgavatam is one of the Purāṇas, Mahā-Purāṇa. Then there is . . . there are Mahābhārata, "The Great History of India." Bhārata means India, and mahā means greater, greater India.
The greater India was the whole planet. The whole planet was Bhārata-varṣa. Now it is crippled. It has become a small tract of land. But originally everywhere, this portion of the world, America, it was also Bhārata-varṣa. Sapta-dvīpa, seven islands. Seven islands. Actually the whole planet is full of water—Pacific Ocean, Atlantic Ocean, Indian Ocean. Full of water. And these are islands only—Asia, Europe, America. There are seven islands, sapta-dvīpa. The planet is sapta-dvīpa, seven full . . . comprising of seven islands. That is Bhārata-varṣa.
So nana-śāstra-vicaraṇaika-nipunau. So we have to study the Vedic literature very carefully, following the footsteps of Gosvāmīs. Not only chanting. This is also required, kṛṣṇot-kīrtana-gāna. But this is meant . . . if you simply go on chanting without reading books, that is also good, especially in this age, because nobody has got power to study books. Education is very less. So still, one who is able, they should consider all this. We have given in English translation so many important books. You study, and chant this Hare Kṛṣṇa mantra like this, and that is the following the footsteps of Gosvāmīs. Ācāryopāsanā. We have to worship the ācāryas. That is recommended in the Bhagavad-gītā for making progress in spiritual life, ācāryopāsanā.
So this is ācāryopāsanā, by reading their books, nana-śāstra-vicaraṇaika-nipunau sad-dharma-samsthapakau. Why studying so many books? For the sake of establishing real religious life, sad-dharma. There are two kinds of dharmas, religious, religions: pravṛtti-mārga, nivṛtti-mārga. Pravṛtti-mārga means materialism, and nivṛtti-mārga means spiritualism. Pravṛtti means because we had intention to enjoy this material world, therefore we have been given this material body by the energy of Kṛṣṇa, prakṛteḥ kriyamāṇāni (BG 3.27), by the . . . for associating with this material world.
We are spirit soul. We have been given this chance to associate with the material world, this material, which is called . . . so there is still the rules and regulation. You associate, you enjoy this material world under this instruction, then you'll not be fallen, you'll not be implicated. That śāstra. Śāstra gives you codes. Just like when I immigrated in this land, they gave me one paper, "Welcome," and some immigration rules. That is śāstra. Similarly, the Vedas means the rules and regulation which, following, they'll very happily live in this material world.