In a society freedom has nothing to say about what an individual does with his freedom; it is not an all-embracing ethic. Indeed, a major aim of the liberal is to leave the ethical problem for the individual to wrestle with. The “really” important ethical problems are those that face an individual in a free society – what he should do with his freedom. There are thus two sets of values that a liberal will emphasize – the values that are relevant to relations among people, which is the context in which he assigns first priority to freedom; and the values that are relevant to the individual in the exercise of his freedom, which is the realm of individual ethics and philosophy.
Milton Friedman – Capitalism & Freedom p.12