Many of those who rejected Stalinism did so by reinvoking the principles of that liberalism in the criticism of which Marxism originated. Since I continued, and continue, to accept much of the substance of that criticism, this answer was not available to me… Marxism’s moral defects and failures arise from the extent to which it, like liberal individualism, embodies the ethos of the distinctively modern and modernizing world, and that nothing less than a rejection of a large part of that ethos will provide us with a rationally and morally defensible standpoint from which to judge and to act.
Alastair Macintyre, Preface to After Virtue