"I believe that fundamental theology should promote unity in the intellectual life of believers by helping them to reflect on the reasons for their faith—certainly with the help of pastoral care and catechesis. Secularism and secularization have an easy time of it when there is weakness of thought, even among believers. The fact that the Christian faith has its foundation in Jesus Christ does not exempt us from looking to philosophy, history or sciences to show our interlocutors that the Christian message does not contradict the knowledge of these other fields of knowledge, but rather reveals their ultimate meaning. A believer who works as an intellectual must be able to explain what Jesus Christ has to do with philosophy, history, medicine, economics, law, and even mathematics, as Monsignor Luigi Giussani loved to repeat."