you can only have one mother

we can only have one mother, few children, few or even a dozen or so husbands. what about father? we can never be certain if our dad is our dad for real, as jews said: only mother is certain to be the kid's parent.

probably that is why some anthropologists believe that a family is the mother plus her child. which led me to the conclusion: is the only true love the love between the mum and her child? if so, i need to get pregnant someday.