The idea of free will can be re-stated in a way that will be more palatable to all but the most rigid determinists. To enable human beings to participate in culture, evolution gave us the ability to override our initial responses, choose among different options, and let behavior be guided by meanings (including rational analysis, abstract rules, and long-term planning). In addition to programming some of our tendencies and reactions, evolution created us to be able to re-program ourselves. It gave us controlled processed, self-regulation, and lifelong behavioral plasticity. It enabled us to use the results of complex, logical reasoning (occasionally!) to alter our behavior.
~Roy Baumeister, The Cultural Animal, p. 274