This chapter introduces the major themes of the book. Insurance practices and related metaphors began expanding rapidly from a European base some 500 years ago. The simultaneous emergence of the modern state was hardly coincidental. Increasingly complex societies energized by market economies required protection from risks of various kinds. This required mobilizing and organizing private capital to achieve common goals. The deepening of markets and development of financial technologies now increases demands for protection beyond conventional borders. But where the fiscal power of the modern state underpinned national insurance and reinsurance systems, the absence of a global fiscal authority is exposed by rising cross-border, systemic, and global risks. That the background condition for necessary innovation in governance is uncertainty has also become undeniable.