  Morris recognizes, apparently, that the primary sense in which an agent is free in performing an action requires that the agent either (a) could have refrained from performing that action or, at least, (b) could have refrained from causing his decision to perform that action. And it is this sense of being free in performing an action that constitutes a necessary condition for an agent's being morally responsible for an action he performs. (Morris shares the view expressed here: that the libertarian idea of freedom is essential to moral responsibility.)