185 Charity needs the light of the truth that we constantly seek. “That light is both the light of reason and the light of faith”, and does not admit any form of relativism. Yet it also respects the development of the sciences and their essential contribution to finding the surest and most practical means of achieving the desired results. For when the good of others is at stake, good intentions are not enough. Concrete efforts must be made to bring about whatever they and their nations need for the sake of their development.
Source: Fratelli Tutti (Vatican.va)