What is Purposive Interpretation?

Abstract

Purposive interpretation leads a double life. As a matter of constitutional practice, it forms the doctrine through which courts in Canada and around the world determine the concrete protections that abstract constitutional rights afford. However, as a matter of constitutional theory, purposive interpretation is routinely rejected as either an empty phrase that offers no alternative to established theories of constitutional interpretation or a dangerous doctrine that provides no basis for distinguishing between justified and unjustified interpretations of constitutional rights. This essay formulates a conception of purposive interpretation that is not vulnerable to these objections. The purposive approach to the interpretation of constitutional rights follows from a set of ideas about how legal interpretation differs from interpretation more broadly, how constitutional interpretation differs from interpretation in other legal domains, and how constitutional interpretation constrains both the purposes it attributes to particular provisions and the application of those purposes to particular contexts. My aim is to show that these ideas fit together in a coherent doctrinal whole that is neither empty nor dangerous. Purposive interpretation is not empty because it offers a genuine alternative to the presuppositions and structure of opposing interpretive paradigms. Purposive interpretation is not dangerous because it provides a principled set of resources for distinguishing between justified and unjustified interpretations.

Keywords: constitutional rights, constitutional interpretation, purposive interpretation, originalism, living constitutionalism, overshooting, undershooting, internal limits