Don't remain in the ignorant stage of life. That is called śūdra. Try to become brāhmaṇa. That is the meaning. It is not prohibited that one cannot become brāhmaṇa. No, one can become brāhmaṇa. If he gets association of a brāhmaṇa, if he agrees to be trained up by a brāhmaṇa, he can become brāhmaṇa. And brāhmaṇa means brahma jānāti iti brāhmaṇa, not by birth. Anyone who has full knowledge of the Supreme, he is brāhmaṇa. Janmanā jāyate śūdraḥ. By birth everyone is śūdra. Even if he's born in a brāhmaṇa family he is śūdra. Janmanā jāyate śūdraḥ saṁskārād bhaved dvijaḥ. The saṁskāra means purification. That is satyaṁ śaucam. But the asuras, they do not want to be purified. They want to remain in the degraded stage of life. That is the difficulty. Otherwise it doesn't matter what he is, which family he's born. It doesn't matter.
Kṛṣṇa says, you'll find, māṁ hi pārtha vyapāśritya ye 'pi syuḥ pāpa-yonayaḥ (BG 9.32). Pāpa-yoni. To take birth low-grade family, or animal family, these are called pāpa-yoni. Kṛṣṇa says that it doesn't matter if one is born in the pāpa-yoni, low-grade family. It doesn't matter. Māṁ hi pārtha vyapāśritya ye 'pi syuḥ pāpa-yonayaḥ. In the human society, striyaḥ śūdrās tathā vaiśyāḥ, even woman and śūdra and vaiśya, they are also taken in the category of pāpa-yoni. Pāpa-yoni means their intelligence is not very sharp. That is called pāpa-yoni. And a brāhmaṇa means to become very, very highly intellectual. That is called brāhmaṇa. Because he'll understand Brahman.