Introducing Hinduism

Why do Hindus revere the cow? Must Hindus be vegetarian?  Hinduism is the world's oldest religion, yet the word 'Hindu' was never used before the 18th century by Hindus to describe themselves. it is defined as polytheistic, but Gandhi declared that a Hindu needn't believe in any god. it is a religion as much of myth as of history – it has no founder, no single authoritative book, even few central...