 Given, then, that Raz’s starting point is that there is no principled inhibition to the law deploying any valid moral reason, an account is plainly needed of how that can be reconciled with his support for the harm principle, a large part of the point of which is to rule out certain moral reasons. But before coming to that, it will be helpful to dwell on autonomy a little longer. In  section 2.2  above, the familiar distinction between two kinds of liberty, negative and positive, and a similar distinction within liberal feminist writing, were noted. Autonomy-based accounts plainly go beyond negative liberty as the absence of obstacles, barriers or constraints, and embrace the notions of positive liberty, in terms of authorship (or part-authorship) of one’s own life, ability to choose between options, realize purposes within bounds as the case may be. Furthermore, autonomy is often contrasted with heteronomy. As Marilyn Friedman puts it,