Loyalty saves us from the self-advantaging compromising of important relations - such as friendship, marital and professional commitments, group memberships, and so on. But as the Aristotelians would put it, its expression requires phronesis - wisdom not to allow it to compromise other important virtues ,there is something to the ancient doctrine of the unity of the virtues. I believe that is true of all virtues, but especially of the executive virtues - such as industriousness, sincerity, conscientiousness, and courage - which may become detached from substantive goods.

Police have both extra constraints and extra permissions - on the one hand, they can't dodge involvement in social disorder as the rest of us can and they may be required to conduct themselves privately in a way that does not undermine their public authority; on the other hand, they have permission to engage in deceptions, invasions of privacy and uses of force that are forbidden to the rest of us. But this does not put them beyond common morality.

The selection of topics for intensive research has often been a function of serendipitous opportunity. My forays into philosophy of education were largely in response to the prompting of friends and my dissatisfaction with much of what - at that time - passed for philosophy of education. I cannot honestly say that there has been either continuity or an overarching schema, though I suspect ,or at least hope, that someone who looked at my oeuvre might conclude that there was a philosophically integrated author.

Police do not work at the immediate direction of the communities they serve, but through their institutional connections. Police departments may develop structures, modi operandi, and cultures that are ethically problematic.

The various roles we incorporate into the criminal justice system as well as the ways in which we construe such roles, lend themselves to the kind of ethical reflection that is open to us all. That said, once we have determined roles and their contours, those who act within them may have special duties and privileges that others may lack. Specific roles may generate ethical inquiries with novel forms, just as new technologies may push us in new directions.

There will always be situations in which conflicts arise between individual and communal values - Catholic police officers deployed to enable women to enter abortion clinics without harassment and doctors who oppose performing abortions. No social role is free of such potential conflicts.

What we have to ask is this: what can we morally expect of and allow to people whom we deploy to fulfill this or that social role :police officer, school teacher, physician? This may sometimes lead to difficult social decisions - e.g. should police be permitted to illegally import drugs as part of a sting operation? In the end, I think "common - that is, critical - morality" should determine the limits of the police role.