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.