Hinduism is an Indian religion or dharma, a religious and universal order or way of life by which followers abide. The word Hindu is an exonym, and while Hinduism has been called the oldest religion in the world, it has also been described as sanātana dharma, a modern usage, based on the belief that its origins lie beyond human history, as revealed in the Hindu texts. Another endonym for Hinduism is Vaidika dharma.
Hinduism includes a diversity of ideas on spirituality and traditions; Hindus can be polytheistic, pantheistic, panentheistic, pandeistic, henotheistic, monotheistic, monistic, agnostic, atheistic or humanist. According to Mahatma Gandhi, “a man may not believe in God and still call himself a Hindu”. According to Wendy Doniger, “ideas about all the major issues of faith and lifestyle – vegetarianism, nonviolence, belief in rebirth, even caste – are subjects of debate, not dogma.”