Argues that reasons internalism, suitably understood, explains categorical reasons for us to cooperate with each other. The norms we then cooperate to satisfy can lie at the heart of legal systems, yielding unexpected implications in the philosophy of law.

Crucially, blame can be addressed to its targets, as an implicit demand for recognition. But when we ask whether offenders would actually appreciate this demand, via a sound deliberative route from their existing motivations, we face a puzzle. If they would, their offense reflects a deliberative mistake, and blame’s hostility seems unnecessary. If they wouldn’t, addressing them is futile, and blame’s emotional engagement seems unwarranted. To resolve this puzzle, I develop an account of blame as a proleptic response to indeterminacy (...) in its target’s reasons, yielding attractive accounts of blame’s relation both to internal reasons claims and to free will. (shrink)