Hinduism is one of the world's oldest religions, originating over 4,500 years ago in India. It is practiced by over 800 million Hindus worldwide, with the majority living in India. Hindus believe in Brahman, the supreme spirit or soul, and that individuals have their own souls (atman) that are reincarnated after death. They worship many gods and goddesses like Shiva, Vishnu, and Ganesh. Important Hindu symbols include Aum, the lotus, and the cow. Major festivals celebrated are Diwali, the festival of lights, and Holi, the festival of colors.