Multicultural societies constitute a challenge for our institutions, for individual members of our communities, and for intermediate ​entities, such as families, schools, businesses, professional associations. Our present condition puts our practical reasons under considerable stress, so that we need to face this question: how can we best deploy our cognitive and volitional capacities, in order to overcome the challenges that we need to face? This essay tackles the question by relying on​ the authors' joint research on practical reason. The essays of the volume, it is argued, focus on various kinds of cultural diversity ​in Europe,​ both​ within its borders and in​ its​ international relations, and consider the philosophical significance that different disciplines (ranging from linguistics, to sociology, to literary criticism) may have in understanding how disagreement and agreement can be managed​ ​in our societies.