The specific function of a human being in society, irrespective of his social status, is to practice control of the mind and senses by observing the regulative principles enjoined in the Vedic sastras. Lord Siva is called pasupati because he protects the living entities in their developed consciousness so that they may follow the Vedic system of varna and asrama. The word pasu refers to the animal as well as to the human entity. It is stated here that Lord Siva is always interested in protecting the animals and the animalistic living entities, who are not very advanced in the spiritual sense. It is also stated that the brahmanas are produced from the mouth of the Supreme Lord. We should always remember that Lord Siva is being addressed as the representative of the Supreme Lord, Visnu. ln the Vedic literature it is described that the brahmanas are born from the mouth of the universal form of Visnu, the ksatriyas are born from His arms, the vaisyas from His abdomen or waist, and the sudras from His legs. In the formation of a body, the head is the principal factor. The brahmanas are born from the mouth of the Supreme Personality of Godhead in order to accept charity for worship of Visnu and to spread Vedic knowledge. Lord Siva is known as pasupati, the protector of the brahmanas and other living entities. He protects them from the attacks of non-brahmanas, or uncultured persons who are against the self-realization process.