Via (who else but) Inclusionist, I checked out Chapter 6 of Prof. George Lakoff's new book on progressive strategy. Take a look at this paragraph on economic equality:
For progressives, deservedness is understood through the lens of nurturance, which says that someone in need deserves assistance. This satisfies the "human dignity principle," making sure no one falls too far behind. It also fulfills the "common good principle," since the needs of the commons are counted as valid needs that merit attention, besides just the needs of an individual.