Amen.
“... THE ONE-WIFE SYSTEM NOT ONLY DEGENERATES THE HUMAN FAMILY, BOTH PHYSICALLY AND INTELLECTUALLY, but it is entirely incompatible with philosophical notions of immortality; IT IS A LURE TO TEMPTATION, AND HAS ALWAYS PROVED A CURSE TO A PEOPLE.” (Millennial Star, Vol. 15, p. 227)
....But it's still happening today. Lot's of great quotes here.................