 When philosophers think about markets and their place and role in society, they need to be aware of the fact that theories about markets can sometimes carry their own implicit value judgments. This is why they need to be sensitive to methodological questions of the scientific discipline that focuses on markets, i.e. economics. When it comes to normative conclusions, political philosophers should also take into account the arguments brought forward by business ethicists, who discuss the moral duties of market participants. As Heath et al. (2010) have recently argued, debates in business ethics and in political philosophy would benefit from being more closely integrated, and this holds in particular for debates about markets. In this final section, these two related themes are briefly discussed. 