This chapter offers a defense of the common law's approach to considerations relating to moral culpability in breach of contract – an approach by which such considerations tend to play a fairly limited role in devising the appropriate response to a breach. Calls for assigning fault a more central role in the law of contract are often inspired by the thought that it ought to reflect more systematically and more directly the morality of promise. The chapter seeks to expose this theoretical stance as misguided, instead locating the common law's approach to fault in broader ideas underpinning the legal and the political culture of which the common law is a product, and in particular the harm principle. The chapter concludes with an outline of what makes a law of contract moral, taking issue with the view that a moral law of contract is one that sets out to enforce morality.