Let me first acknowledge Mark O'Neill's useful review of the 2013 Bloomsbury edition of this book. Professor Alasdair MacIntyre must be amused at the fact of a Bloomsbury Revelation whose meanings can only be understood by acts of intuition. My Duckworth second edition contains some typos, but no aridity.
Reading 'After Virtue' reminded me of a recent memorial service for the father of a family friend, who'd died having developed dementia. Recalling his father's mental deterioration, the son said 'He could still hold a long discussion with me about philosophy, but he hadn't a clue who I was'.
This 1981 book by MacIntyre depicts contemporary moral debates and disagreements as shrill, emotive, interminable, weighing incommensurables, characterised by assertion and counter-assertion, and arguments within ourselves. Fragments, eclectic mélange. Sounds demented?
MacIntyre looks back past the philosophy of the Enlightenment to root his teleological view of man and the good in the thinking of Aristotle, and latterly that of Thomas Aquinas. In doing this, he makes a lot of sense. MacIntyre is a Roman Catholic. In a talk filmed at Notre Dame University he's equally sceptical of government and markets, liberals and conservatives (public intellectuals and advertising executives).
For a flavour of this fine man's thinking and disposition, that and several other talks can be found by searching the internet.