Crucially, the Islamic Secular differs from the Western secular in that, while the whole point of the Western secular is to liberate various pursuits from religion, the Islamic Secular differentiates these disciplines not from religion but simply from shari'ah. Similarly, while both secularization and secularism play key roles in the Western secular, both of these concepts are alien to the Islamic Secular, as the Islamic Secular seeks neither to discipline nor to displace religion, nor expand to its own jurisdiction at religion's expense. The Islamic Secular is a complement to religion, in effect, a "religious secular." Nowhere are the practical implications of this more impactful than in Islam's relationship with the modern state. In this book, Jackson makes the case for the Islamic Secular on the basis of Islam's own pre-modern juristic tradition and shows how the Islamic Secular impacts the relationship between Islam and the modern state, including the Islamic State.