Quote

"Nothing more appropriate could be spoken by human nature about guarding against the rise of the vice of discord or about healing it once it has arisen, than the remembrance that God willed to create as a single being the parent from whom the whole multitude was to be propagated, in order that through this reminder the concord of unity might be maintained even in multiplicity. Indeed, that the woman was made for the man and from his side also clearly signifies how affectionate the union of husband and wife ought to be."

--St. Augustine, The City of God