Toleration, political theorists tell us, is a philosophy of government that asks people to get along with others who differ substantially in their backgrounds and preferences. In our day, such a goal, even if it seems attractive (and it may not be for everyone), is elusive. We are continually reminded, first of all, that the impulse to share the benefits of social life so widely – among persons racially, ethnically, sexually, and religiously diverse – is not always widely shared. Many political regimes have taken it upon themselves to suppress the activities of groups or sects whose beliefs they regard to be subversive of social stability; territorial wars inspired by racial, ethnic, or religious differences continue to define the climate of contemporary political life in many regions of the world. But even more perplexing may be the fact that even ostensibly tolerant societies exert a considerable level of suppression of and control over beliefs, dispositions, and expressions – a practice from which the theory of toleration apparently tries to extricate itself. This is why much of our common experience of secular institutions shows that such institutions – even while they accept persons with different backgrounds and beliefs – also remain hostile to those who wish to express, or act upon, their affiliations openly. School districts in the United States, for example, regularly limit the expression of the very religious beliefs that they apparently tolerate.