Effective altruism has become a worldwide phenomenon. The movement combines empathy and reason in the attempt to improve the world. Adherents don’t let moral gut instincts dictate their altruistic efforts, but use evidence and reflection to do the most good they can. Effective altruism originated, and primarily grew, in strongly secular environments—such as philosophy departments or Silicon Valley. So far, a religious perspective on this movement has been lacking. What can people of faith learn from effective altruism? What may they criticise? What can effective altruism in turn take from religion? This volume offers a first examination of these questions, covering various Christian as well as Jewish and Buddhist perspectives