On Christian Marriage
CASTI CONNUBII
Encyclical Letter of Pope Pius XI on Christian Marriage
Issued on December 31, 1930

Section 27:

This subjection, however, does not deny or take away the liberty which fully belongs to the woman both in view of her dignity as a human person, and in view of her most noble office as wife and mother and companion; nor does it bid her obey her husband’s every request if not in harmony with right reason or with the dignity due to wife; nor, in fine, does it imply that the wife should be put on a level with those persons who in law are called minors, to whom it is customary to allow free exercise of their rights on account of their lack of mature judgment, or of their ignorance of human affairs. But it forbids that exaggerated liberty which cares not for the good of the family; it forbids that in this body which is the family, the heart be separated from the head to the great detriment of the whole body and the proximate danger of ruin. For if the man is the head, the woman is the heart, and as he occupies the chief place in ruling, so she may and ought to claim for herself the chief place in love.

Of course, the archetype for this is Christ on the Cross, leading and protecting his Bride the Church, and the Church, personified by His Mother, remaining wholly docile in loving solidarity. The ideal of a Knight and his Lady.