Modern secularism, as theorized by prominent liberal philosophers such as John Rawls and Jürgen Habermas, prescribes that the state should treat all religions equally on condition that they and their adherents relinquish their theocratic aspirations and recognize the political sovereignty and superiority of man-made law. Convinced that the secular bargain undermines the moral virtue of society and its members, a small, fragmented, but nevertheless conspicuous number of Islamists in Europe prefers to observe Islamic law in all walks of life, private and public. Alarmed by Islamists and informed by Orientalist readings of Islam, an increasingly vehement and vociferous contingent of Islamophobes avers that Islam is inherently incompatible with...