Hinduism, often considered the world's oldest living religion and the third-largest with over 1.1 billion adherents, is a diverse, non-dogmatic tradition originating in India as a, "Sanatana Dharma" or eternal way of life. It lacks a single founder or holy book, instead embracing various practices, sects (like Vaishnavism and Shaivism), and philosophical perspectives, including polytheism, monotheism, and pantheism. Core tenets include dharma (ethics/duty), samsara (reincarnation), karma (action/consequence), and the pursuit of moksha (liberation), with a profound emphasis on finding the universal truth rather than one exclusive path.