We are different parts and parcels of Kṛṣṇa, God, so we must act accordingly. Just like my hand. Hand is there. If the hand is in proper place, he can act nicely. But if I cut the leg and make hand or hand make the leg, then it is all lost. All lost. One must act according to his qualification. That, according to that qualification, the brāhmaṇa, kṣatriya, vaiśya, śūdra, they are described in the Bhagavad-gītā. This brāhmaṇa means these are the symptoms: satyaṁ śamo damas titikṣā ārjavam, jñānaṁ vijñānam āstikyaṁ brahma-karma svabhāva-jam (BG 18.42). This is human civilization. We must train people in such a way that we must see there what is his quality. According to quality. Just like a physician gives medicine according to the symptom of the disease, then it is cured. Not that any medicine. In the drug house, there are so many medicines. You cannot say: "Any medicine will do." No. It is the physician who will pick up the real medicine and he'll administer to the patient. Then he'll be cured.
So this varṇāśrama-dharma means—cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13)—from the animal position of the human being, to bring him to the human position. That is varṇāśrama-dharma. Just like in school, college, to become graduate means to become distinguished from the fools and rascals. Similarly, human being does not mean the struggle for existence, as the one big fish is eating another small fish, another is . . . no, no. That is not human. That is natural, but you have to rectify the natural position for the . . . for realization of the utmost aim of life. That is human life. Not to treat like animals. Sa eva go-kharaḥ (SB 10.84.13).
So that spiritual consciousness begins when one understands that he is soul; he is not this body, he is spirit soul, ahaṁ brahmāsmi. Brahman means the spirit soul. And there human civilization begins. Otherwise, anārya, anārya-juṣṭam. Kṛṣṇa, when Arjuna was declining to fight, He chastised him that, "This denial is anārya-juṣṭam. It is befitting for the anārya, those who are not advanced. One must do his duty. You are a kṣatriya. Your duty is to fight to give protection to the citizen. So why you are denying this?"
So here the example is given, jalaukasāṁ jale yadvan mahāntaḥ adanti. Adanti means swallows up. Similarly, when the Yadus became very powerful . . . because they are descendants of Kṛṣṇa. Who can be . . .? So they were fighting anywhere, conquering anywhere, and everywhere they were victorious. So that was bhū-bhārān. Bhū-bhārān means burden of the world. When one becomes extravagant and misuses his power, that is burden of the world. You cannot misuse your . . . you get power by the grace of God, by grace of Kṛṣṇa. If you misuse it, then you become a burden. A burden. As soon as there is burden, then it is dharmasya glāniḥ. Kṛṣṇa says, yadā yadā hi dharmasya glānir bhavati (BG 4.7). As soon as there is misuse of power, tadātmānaṁ sṛjāmy aham, He comes. So Yadu-vaṁśa, Kṛṣṇa's dynasty, when Kṛṣṇa saw that they are becoming so powerful, that unnecessarily they are fighting, therefore to kill them, that fighting spirit was engaged for fighting amongst themselves, one another.