Prahlāda Mahārāja, directly his father is a great demon, but he is not demon. It does not mean that a person born of low family is also low. This is not the verdict of Vedas. They . . . vedic culture was lost, or put into difficulty, simply for this reason, when the Vedic followers in India, they made these classification of brahmin, kṣatriya, as hereditary.
There is hereditary preference, certainly. If a man is born in a brahmin family, that is also stated in the Bhagavad-gītā, that . . . but by the contamination of Kali-yuga, all higher-class families, they have been contaminated. For example, we find it all these in the Prahlāda Mahārāja's instruction we shall see, that even if one is belonging to the higher-grade families . . . but that is not simply by birthright.
There are regulative principles. Just like our Society members, simply by being a member of the Society, being situated, is not all. He has to keep himself always alert in the principles. Then he is all right. Otherwise he is fallen down. Similarly, in the Śrīmad-Bhāgavatam and all Vedic scripture it is stated that the brahmin, kṣatriya, vaiśya, the higher class, how they can keep up their status. You must keep your status.