Yes, you read those last two quotes correctly; Sanger favored forced segregation and sterilization of “[e]very feeble-minded girl” and every women who might pass on “feeble-mindedness” to their children. It’s interesting to note she proposes this for those “especially of the moron class;” one wonders what class of people this is referring to. If one reads her books, it’s not too hard to figure out.