Abstract
This essay addresses two popular worries about morality in an atheistic context. The first is a psychological or sociological one: the worry that unbelief makes one more disposed to act immorally than one would be if one had theistic beliefs and, consequently, widespread atheism produces societal dysfunction. This essay argues that the relationship between atheism and human moral beliefs and behaviour is complex, and that highly secularized societies can also be deeply moral societies. The second worry is philosophical in nature: the worry that if there is no God or gods, then there are also no objective moral truths or facts. This essay make the case that the question of whether there are objective moral truths is independent of the existence or nonexistence of God. In the final section, the essay discusses the nature and possible grounds of objective morality in an atheistic context.