If we understand what is the meaning of becoming brāhmaṇa, what is the meaning of becoming kṣatriya, what is the meaning of become a vaiśya, and what is the meaning of becoming śūdra... That is described in the Śrīmad-Bhāgavatam. Mukha-bāhūru-pādebhyaḥ. Mukha means the face, bāhu means the arms, ūru means the waist, and pāda, these legs. So mukha-bāhūru-pādebhyaḥ. These brāhmaṇa and the kṣatriya and the vaiśya and the śūdra, it should be taken as the different parts of the body of the virāṭ-puruṣa, Kṛṣṇa. Of the virāṭ-puruṣa.
So the brāhmaṇa's business you can understand—the mouth. You have got the tongue. Brāhmaṇa's business is to eat and to chant Vedic mantras. Therefore to give eatables to the Supreme Lord, according to our Vedic principle, the brāhmaṇas are called and they are given foodstuff, that "You eat. By your eating, Kṛṣṇa will eat." But that has been misused now, but actually that is the meaning. In the Vedic literature they do not say that "For some pious activities you call some poor men." No. Brāhmaṇas. Brāhmaṇa-bhajana. Because the brāhmaṇa is supposed to be the mouth of God. Similarly, kṣatriya is supposed to be the arms of God, the vaiśyas, the waist of God, and the śūdras, the legs of God.
But God is Absolute. Therefore there is no distinction between mouth or the leg. If you offer flowers and tulasī on the lotus feet of God, Kṛṣṇa, and if you decorate the mouth of Kṛṣṇa, it is the same bhakti. Because there is no difference of the mouth and legs, provided the mouth is working as mouth and the leg is working as leg for satisfying the Supreme. Then there is no such distinction. As soon as Kṛṣṇa consciousness is absent, a so-called brāhmaṇa is puffed up. 'Oh, I am born in brāhmaṇa family. I am bigger than the śūdras." That is falldown. The real purpose is that either you be mouth or hand or waist or leg, the real purpose is to maintain the body very perfectly. That is real purpose.
Similarly, either you become brāhmaṇa or you become kṣatriya or you become śūdra or vaiśya, real purpose is how to satisfy Kṛṣṇa. That is explained in Bhāgavatam.