What holds a society together when citizens disagree not only on policies but on the deepest moral and cultural values? Many coutries today faces this very dilemma, as polarization and distrust increasingly strain the fabric of its democracy. Let’s Agree on Poland: A Case Study of Constitutional Design (Oxford University Press, 2025) — a Polish constitutional bestseller, now available in English — addresses this challenge by reviving the classical idea of civic friendship as a guiding principle of constitutional design. Rather than striving for unattainable consensus on values, the book proposes institutions that enable cooperation across divides: robust decentralization, checks and balances that prevent domination, and fair procedures that guarantee mutual recognition. The volume itself is the outcome of a remarkable collaboration between progressives and conservatives, working together within the Social Contract Incubator, a network of 130 leading Polish intellectuals known by its Polish acronym IUS. In Notre Dame, a pair of conservative and liberal intellectuals will talk how Poland’s contractarian vision seeks to replace hostility with civic friendship, and will invite local scholars and practitioners to consider whether similar institutional strategies could help stabilize pluralism in other coutries.