<p>Given that persons typically have a right not to be subjected to the hard treatment of punishment it would seem natural to conclude that the permissibility of punishment is centrally a question of rights. Despite this the vast majority of theorists working on punishment focus instead on important aims such as achieving retributive justice deterring crime restoring victims or expressing society&#39;s core values. Wellman contends that these aims may well explain why we should want a properly constructed system of punishment but none shows why it would be permissible to institute one. Only a rights-based analysis will suffice because the type of justification we seek for punishment must demonstrate that punishment is permissible and it would be permissible only if it violated no one&#39;s rights. On Wellman&#39;s view punishment is permissible just in case the wrongdoer has forfeited her right against punishment by culpably violating (or at least attempting to violate) the rights of others.</p><p>After defending rights forfeiture theory against the standard objections Wellman explains this theory&#39;s implications for a number of core issues in criminal law including the authority of the state international criminal law the proper scope of the criminal law and the tort/crime distinction procedural rights and the justification of mala prohibita.</p>