ABSTRACT
At the start of the previous chapter, an account of practical reasoning was divided into explorations of what is involved in making reason practical and of how we might make practice reasonable. That chapter dealt with the practicality of reasons, and so this chapter will concentrate on the notion of reasonable practice, the political implications of our account of reasoning practically. It will become clear that there are significant implications for the justification of principles of political justice. Not only can we justify some principles of justice, but the principles that we can justify are objective and universal. Of course, this primary construction amounts to a thin set of principles that are largely indeterminate of the content of the bulk of our everyday political practices. However, these principles of justice set limits to reasonable practice and therefore constrain legitimate diversity. What emerges is an understanding of principled pluralism, a diverse range of secondary constructions that respect a thin but primary account of just principles.
