There are three kinds of departmental study in the Vedas. First thing is sambandha. Sambandha means, "What is my relationship with God." This is stated there. In the Vedānta it says, janmādy asya yataḥ: the Absolute Truth is that from whom everything is generated. So everything, amongst everything, I am also, you are also. So you are also coming from that Supreme Absolute Truth. Kṛṣṇa says, mamaivāṁśo jīva-bhūtaḥ (BG 15.7): "All these living entities . . ." Sarva-yoniṣu kaunteya (BG 14.4): "In every species, any form of life . . ." sambhavanti mūrtayo yāḥ, "as many forms are there . . ." Not only human beings—the animals, the trees, the birds, the aquatics, the insects, everyone, all living entities. Kṛṣṇa says, sarva-yoniṣu kaunteya sambhavanti mūrtayo yāḥ: "In any species of life, as many forms are there," ahaṁ bīja-pradaḥ pitā, "I am their original father." Bīja-pradaḥ pitā, seed-giving father. So as father places the seeds within the womb of the mother, similarly the material nature is the mother and Kṛṣṇa is the father. The Kṛṣṇa impregnates the material nature, and we come out in different forms: sveda-ja, udbhij-ja and jarāyu-ja and aṇḍa-ja. Sveda-ja means by perspiration, through perspiration. Just like bed bugs. Bed bugs . . . because if you keep your bed nasty, do not keep it very clean, then by your perspiration there is generation of these bed bugs. They are called sveda-ja, "By perspiration." And aṇḍa-ja, through the eggs. Just like the birds, the living entity is coming through the eggs. That is called aṇḍa-ja. Sveda-ja, aṇḍa-ja, jarāyu-ja, embryo, just like we are coming from the embryo. Aṇḍa-ja, jarāyu-ja. And udbhij-ja, coming from the seeds, the trees, plants. So within these four groups, all different living entities are coming.
So the . . . by gradual evolution, we are coming to the human form of life. So in the human form of life, here there is a prerogative, there is a chance to know what is God and what is my relationship with Him. That is called sambandha-jñāna. Sambandha, abhidheya. Then execution of the duty. Just like sambandha. We can understand, an unmarried girl and unmarried boy, there is first of all sambandha: the father, mother makes the relationship. Then there is function between husband and wife. That is called abhidheya. And why? No, because there is a necessity. What is that? To get children. Sambandha, abhidheya, prayojana. Prayojana. Every sambandha, every relationship is made, every action is done with an aim, the goal, the prayojana. So Vedic literature means sambandha, abhidheya and prayojana. That is to be studied in the human form of life. Vedaiś ca sarvair aham eva vedyam (BG 15.15). To study Vedas means to understand what is my relation, what is Kṛṣṇa, what I am, and what is my relationship, and how to act in that relationship, and what is the aim of life.
The aim of life is to go back to home, back to Godhead. That is the aim of life. We are fallen in this material condition of life. We are suffering, but we do not know. We are so fool. Just like animals, we do not know what is the aim of life. Aim of life, that is also described in the Bhagavad-gītā: janma-mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam (BG 13.9). When we can understand that "This process of repetition of birth, death, old age and disease, this is not wanted by me . . ." Nobody wants to die, but death is forced upon him. He does not think that, "This is my problem. I do not want to die, but death is as sure as anything." So this is the problem. Nobody is careful how to solve this problem. They are simply engaged in the, I mean to say, temporary problems. The temporary problems are not problems. Real problem is how to stop death, how to stop birth, how to stop old age and how to stop disease. That is real problem. That can be done when you are liberated from this material world. This is our problem.