So it is... Kṛṣṇa is exhibiting how things are going on. As soon as there will be burdensome, there will be some war, pestilence, famine—and finished. And finished. You don't require to reduce population by contraceptive method. By nature's way, the wholesale it will be reduced, bhū-bhārān sañjahāra. By nature's way. Why should you commit sinful activities? You don't beget children unnecessarily and don't kill them. That is religion. That is civilization. Why should you unnecessarily produce children like cats and dog? Their śāstra says that don't become father, don't become mother if you cannot save your sons from death. This is the responsibility. This is father's, mother's, responsibility. Na mocayed yaḥ samupeta-mṛtyum, pitā na sa syāj jananī na sa syāt. One should not become, try to become father, one should not try to become mother if the parents cannot save the child from imminent death. That is the responsibility. And who is that father? Who is that mother? This is Vedic civilization. My Guru Mahārāja used to say that "I am a sannyāsī. I am not married, neither I am meant for marrying. But if I can produce Kṛṣṇa conscious children, I can marry hundred times." That is the responsibility. Don't produce cats and dogs; produce Kṛṣṇa devotees. Then you'll marry. Otherwise don't marry. This is Vedic injunction. Marriage is not meant for sense gratification. Marriage is meant for producing nice children, Kṛṣṇa devotees.
So that is our aim. Our aim is not to produce cats and dogs. There are so many cats and dogs, the world is not happy. Now there is need of producing nice children, sober, gentle, devotee of Kṛṣṇa, good brain, good character. These things are required. So they were not unwanted children, these Yadus. This is a make-show (indistinct) other. They came, they are all demigods, they descended just to fulfill Kṛṣṇa's mission. Kṛṣṇa's mission, Kṛṣṇa came down so all the confidential servants of Kṛṣṇa, they also appeared to help Him in different... So when Kṛṣṇa wanted to go, He wanted to go with the descendants also, who came to help Him. So this is a make-show that the Yadus fought amongst themselves. The real purpose is, Kṛṣṇa wanted to take them away. Otherwise, superficially, when one becomes unnecessarily powerful, disturbs the world situation, he's a burden. He's a burden. That kind of burden is vanquished by Kṛṣṇa's desire, will. There must be some catastrophe like war, pestilence, famine, and everything will be finished.
So our duty is, the human form of life, duty is that we should know that we are eternal servant of Kṛṣṇa and, forgetting our relationship, we have come to this material world, and there is struggle for existence, beginning aquatics, jalajā nava... There are nine hundred thousand species of aquatics. Who is that physiologist who can know nine hundred thousand species of aquatics? But in the śāstra you will find, exactly. It doesn't say nine hundred one, Or eight hundred ninety-nine. No. Nine hundred. Nine hundred thousand species, there are. So because we are in the material contact, and according to our desire, we are having different types of body—aquatics, trees, birds, like that. This is our botheration. Janma-mṛtyu-jarā-vyādhi (BG 13.9), in this way you are... This is our problem. Therefore human civilization means when people are interested to solve the problems. That is human civilization. Otherwise animal. Struggle for existence. They... There is no human side, that is on the animal side, struggle for existence. Human life is not for struggle. To become sober, not like animals. The animals are engaged whole day and night for searching out food and sense gratification, sex. That is not human civilization.