Kevin Vallier, in his book All the Kingdoms of the World: On Radical Religious Alternatives to Liberalism, presents the first book-length critique of the contemporary revival of Catholic integralism. Vallier’s work seeks to show the insufficiency of Catholic integralism as well as other religiously motivated anti-liberal theories. Vallier ultimately rejects Catholic integralism because, as he argues, it cannot transition from a liberal order to an integralist one, it is intrinsically unstable, and integralism is fundamentally unjust. Liberals, post-liberals, and integralists will find much to take from this book. Vallier’s arguments set an agenda for integralists to expand and deepen their own philosophical and theological politics.