Humanists think that belief in a God is not especially reasonable or justified. ‘Arguments for the existence of God’ presents two popular arguments to explain why there is a God and indicates where humanist critics believe those arguments fall down. The cosmological argument asks: why is there anything at all? How do we explain the existence of the laws of nature? There are problems with this argument. Does it make sense to question why there is something rather than nothing? Design arguments begin with the observation that the natural world has remarkable features such as order, purpose, and complexity and God is the only explanation for these.