śūdro 'pi śamādy-upeto brāhmaṇa eva brāhmaṇo 'pi kāmādy-upetaḥ śūdra eva

"Although one may be born in a sudra family, if he is endowed with the brahminical qualities beginning with sama [control of the mind], he is to be accepted as a brahmana. Although one may be born in a brahmana family, if he is endowed with the qualities beginning with kama [lust], he is to be considered a sudra." No one should present himself as a brahmana simply on the basis of being born in a brahminical family. One must be qualified by the brahminical qualities mentioned in the sastras, particularly Bhagavad-gita: