" Thomas Aquinas, the great medieval scholar whose ideas became the semi-official philosophy of the Roman Catholic church, wrote that whatever we have in “superabundance”—that is, above and beyond what will reasonably satisfy our own needs and those of our family, for the present and the foreseeable future—“is owed, of natural right, to the poor for their sustenance. "

― Peter Singer , The Life You Can Save: How to Do Your Part to End World Poverty