The overarching structure of Dworkin's work rests on several main, supporting pillars. Among these we find the question of the relationship between law and morality, and the ideal of legal interpretation in hard cases. This issue has constantly been at the centre of his preoccupations, up to and including his most recent publication, Justice in Robes (2006). Then there is the question of the relationship between justice and equality. Another preoccupation is the question of integrity as the foundation of moral judgment; a further one is the question of the difficult balance between political liberalism and individual rights, between the neutrality of political consensus and the defense of a "just polity." The papers centered around these issues.