This chapter sets out the main objectives and major themes of the work. The overall aim of the project is to establish the implications of a diminishing contract law (common law in particular).By ‘diminishment’ is meant the return to formal and classical law values in the common law and a reduced field of application for the rules of contract law. A brief outline is given of the topics that are explored during the course of the book: the rise of private ordering through contracts and the legal response to this; the ‘contractualisation’ of society; the formalist turn in modern contract law; the likely future pressures on legal development (such as ‘smart contracts’).The chapter raises some initial arguments concerning the drawbacks of a diminishing contract law (lack of development of public rules of contract law; lack of legal scrutiny of many modern contracts, or aspects of them; lack of opportunity for courts to express and apply the normative values that should underpin contracting). The chapter also anticipates, and responds to, some initial questions or criticisms about the project.