‘I believe in Christianity as I believe that the Sun has risen—not only because I see it, but because by it, I see everything else’ (C. S. Lewis). These words help us understand why faith in God is so important to seeing and understanding the world, and our place within it. Yet faith is about more than just understanding. As Lewis points out, a ‘believed idea’ feels different from an idea that is not believed. Once the Christian worldview has been accepted as true, it leads to a ‘special sort of