So it is the king's duty to observe his dharma, Kṣatriya. Kṣatriya's duty is to give protection to the citizens, security of life and property, and guide them gradually to develop Kṛṣṇa consciousness. This is Kṣatriya's duty. Brāhmin's duty is to guide the Kṣatriyas whether he is actually executing his duty according to śāstra. That is Brāhmin's duty. Brāhmin, Kṣatriya, Vaiśya, Śūdra. Similarly, Vaiśya's duty is to see economic development of the state, and the Śūdra's duty—because Śūdra means fourth-class men; they have no intelligence—therefore their duty is to serve the three higher classes, Brāhmin, Kṣatriya, Vaiśya. This is the system. Cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13). According to quality and work—Brāhmin's quality and Brāhmin's work; Kṣatriya's quality and Kṣatriya's work; Vaiśya's quality and Vaiśya's work.
Quality means education, culture. Just like a medical practitioner: when he passes his examination in the medical college, that is his quality. Or a lawyer, when he passes his examination in the university, that is his quality. But simply by passing the examination, if he sits down at home, then he cannot be called a medical practitioner. He must work as a medical man. He'll not only . . .
(aside:) You sit down properly, not like that.
Not simply acquiring the quality, but he must work as a Brāhmin. Then he will be accepted as a Brāhmin. Now everything is thrown away. If somebody happens to take birth in a Brāhmin family, he becomes a Brāhmin. All others, Śūdra. And he may do all nonsense, and still he is Brāhmin. That is not . . . it is the duty of the state to see whether you are qualified as a Brāhmin. "You are claiming as Brāhmin. Whether you are actually qualified as a Brāhmin? Whether you are working as a Brāhmin?" It is the state's duty to see. It is the king's duty. He may not misguide others.