Now, as a scientific study of the Aryan languages became possible only after the discovery of Sanskrit, a scientific study of the Aryan religion dates really from the discovery of the Veda. The study of Sanskrit brought to light the original documents of three religions, the Sacred Books of the Brahmans, the Sacred Books of the Magians, the followers of Zoroaster, and the Sacred Books of the Buddhists. Fifty years ago, these three collections of sacred writings were all but unknown, their very existence was doubted, and there was not a single scholar who could have translated a line of the Veda, a line of the Zend-Avesta, or a line of the Buddhist Tripi_t_aka. At present large portions of these, the canonical writings of the most ancient and most important religions of the Aryan race, are published and deciphered, and we begin to see a natural progress, and almost a logical necessity, in the growth of these three systems of worship. The oldest, most primitive, most simple form of Aryan faith finds its expression in the Veda. The Zend-Avesta represents in its language, as well as in its thoughts, a branching off from that more primitive stem; a more or less conscious opposition to the worship of the gods of nature, as adored in the Veda, and a striving after a more spiritual, supreme, moral deity, such as Zoroaster proclaimed under the name of Ahura mazda, or Ormuzd. Buddhism, lastly, marks a decided schism, a decided antagonism against the established religion of the Brahmans, a denial of the true divinity of the Vedic gods, and a proclamation of new philosophical and social doctrines.