Some, such as Charles Fried in his "Contract as Promise", have argued that morally, A is obligated to honor a contract made with B because A has made a promise. Fried wrote, "The moralist of duty thus posits a general obligation to keep promises, of which the obligation of contract will only be a special case – that special case in which certain promises have attained legal as well as moral force." It would seem that Fried has since revised his interpretation.
