“The first of these practices, humility, recognizes that in a world of deep differences about fundamental issues, Christians and non-Christians alike are not always able to prove why they are right and others are wrong. Christians are able to exercise humility in public life because we recognize the limits of human reason, including our own, and because we know we have been saved by faith, not by our moral actions and goodness. That confident faith anchors our relationship with God, but it does not supply unwavering certainty in all matters.”