The Rigveda, the oldest Vedic text, is a vast repository of spiritual, philosophical, and scientific wisdom. Compiled by sages, it contains hymns praising deities, discussing cosmic laws, and exploring moral conduct. It also references scientific concepts like the speed of light. Recognized by UNESCO, the Rigveda is central to Hindu thought, influencing culture, ethics, and meditation. Its teachings promote righteousness, self-discipline, and universal harmony.