A call to fidelity seeks to examine and critically evaluate the contributions that Charles E. Curran has made to the field of Catholic moral theology over the past forty years. It also seeks to assess the development of specific topics in contemporary moral theology to which Curran has made his unique mark, particularly in fundamental ethics, sexual and medical ethics, social and political ethics, and topics related to dialogue with other traditions and approaches to Catholic ethics. Reviewing the many years of his influential writings, thought, and scholarship, fourteen distinguished scholars examine his contributions and the current state of the topics under discussion--which are as far ranging as academic freedom, birth control, gay and lesbian relationships, and feminism. Each contributor also provides a critical evaluation of Curran's work and outlines how these areas will hold or undergo transformation as the church looks toward its relationship with society and culture in the coming decades.