Brahman: 1) A philosophical term, used for impersonal, eternal, infinite and unchanging Absolute, the origin of everything.
2) A member of a supreme varna of priests in India. It were the Brahmans who used to become priests, scientists and philosophers since the ancient times. They were highly respected and their murder was considered as the most grievous sin. Nowadays the most of the officials, scientists and teachers in India are the Brahmans.