This Article restates the Louisiana civil law of negotiorum gestio and unjust enrichment, one decade after the common-law Third Restatement of Restitution and Unjust Enrichment. The Article first redefines and re-designates the term "quasi-contract" from a false source of obligations to a valid practical term describing the two separate institutions of negotiorum gestio and unjust enrichment. Based on this renewed understanding of quasi-contract, the Article proceeds to a detailed commentary on the revised Louisiana law of negotiorum gestio and unjust enrichment (which includes the special action for payment of a thing not due and the general action for enrichment without cause).