Arcanum

Source

Divorce "is the fruitful cause of mutable marriage contracts; it diminishes mutual affection; it supplies a pernicious stimulus to unfaithfulness; it is injurious to the care and education of children; it gives occasion to the breaking up of domestic society; it scatters the seeds of discord among families; it lessens and degrades the dignity of women, who incur the danger of being abandoned when they shall have subserved the lust of their husbands. And since nothing tends so effectually as the corruption of morals to ruin families and undermine the strength of kingdoms, it may easily be perceived that divorce is especially hostile to the prosperity of families and States..."

– Pope Leo XIII, Arcanum, February 10, 1880