“The sceptical attack [on free will philosophy’s concept of libertarian freedom] amounts simply to a dogmatic determination to describe the world only in terms that already exclude freedom as a distinctive feature of human life. The sceptic assumes that the world can contain no power other than causation; and that any event that is not causally determined by prior events must just be random. But if we insist on describing the world only in these terms, then of course it may well appear that libertarian freedom is not possible and cannot exist. But by what right do we so exclude such freedom from the very outset?”