Purushashuta of the Rig Veda states the Brahmanical theory of the origin of caste, that the Brahmans have originated from the mouth of the Primordial Purusha, the Kashatriyas from the arms, the Vaishyas from the thighs and the Shudras from the feet (Rig Veda 10.90.11-12). Perhaps this forms the basis of common social perception that the Brahmans and other high castes are more meritorious than the other castes, merit/talent being inherent in their gene pool.