50 Particularly in the held of education, in organized public welfare, in trade unions, and in public administration, will the talents of local Catholic experts play a paramount role, if they, following the duty imposed by their consciences—a duty whose neglect would be traitorous—base their thinking and action on Christian principles. These, as we learn from experience acquired in the course of many centuries, possess the highest power and influence for the pursuit of the common good.
Source: Princeps Pastorum (Vatican.va)