This is the first thorough examination of what has become an intensely relevant contemporary issue. Beginning with an account of the basic premises of liberal democracy, it moves on to a comparison between rational, secular grounds of decision and grounds based on religious convictions. The author discusses particular issues such as animal rights and abortion, showing how religious convictions can bear on an individual's decisions about them, and enquires whether reliance on such convictions is compatible with liberal democratic premises. He disputes the claim that human beings can be expected to rely exclusively on rational, secular grounds, given their limited capacities.