Raymond Aron ascribes to ...

Raymond Aron ascribes to Weber the view that 'each man's conscience is irrefutable.' ... while [Weber] holds that an agent may be more or less rational in acting consistently with his values, the choice of any one particular evaluative stance or commitment can be no more rational than any other. All faiths and all evaluations are equally non-rational.
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 Alasdair MacIntyre

Quotes from the same author

What matters at this stage is the construction of local forms of community within which civility and the intellectual and moral life can be sustained through the new dark ages which are already upon us. And if the tradition of the virtues was able to survive the horrors of the last dark ages, we are not entirely without ground for hope. This time however the barbarians are not waiting beyond the frontiers; they have already been governing us for quite some time.
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 Alasdair MacIntyre
A crucial turning point in that earlier history occurred when men and women of good will turned aside from the task of shoring up the Roman imperium and ceased to identify the continuation of civility and moral community with the maintenance of that imperium. What they set themselves out to achieve instead - often not recognizing fully what they were doing - was the construction of new forms of community within which the moral life could be sustained so that both morality and civility might survive the coming age of barbarism and darkness.
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 Alasdair MacIntyre
The hypothesis I wish to advance is thatthe language of morality is ingrave disorder.... What we possess, if this is true, are the fragments of a conceptual scheme, parts of which now lack those contexts from which their significance derived. We possess indeed simulacra of morality, we continue to use many of the key expressions. But we have--very largely if not entirely--lost our comprehension, both theoretical and practical, of morality.
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 Alasdair MacIntyre
Individuals inherit a particular space within an interlocking set of social relationships; lacking that space, they are nobody, or at best a stranger or an outcast. To know oneself as such a social person is however not to occupy a static and fixed position. It is to find oneself placed at a certain point on a journey with set goals; to move through life is to make progress - or to fail to make progress - toward a given end.
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 Alasdair MacIntyre
Those emotive theorists who said that the function of moral utterance was to evince emotion would... have been correct if they had substituted the indefinite for the definite article.
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 Alasdair MacIntyre