Lois Mcmaster Bujold said this quote
“ You don't pay back your parents. You can't. The debt you owe them gets collected by your children, who hand it down in turn. It's a sort of entailment. Or if you don't have children of the body, it's left as a debt to your common humanity. Or to your God, if you possess or are possessed by one.The family economy evades calculation in the gross planetary product. It's the only deal I know where, when you give more than you get, you aren't bankrupted - but rather, vastly enriched. ”