My view that tolerance and rationality are intimately connected is not merely an a priori thesis. The transformation of Marxism from a rationally hel… - Alasdair MacIntyre

The virtues therefore are to be understood as those dispositions which will not only sustain practices and enable us to achieve the goods internal to practices. but which will also sustain us in the relevant kind of quest for the good. by enabling us to overcome the harms. dangers. temptations and distractions which we encounter. and which will furnish us with increasing self-knowledge and increasing knowledge of the good. The catalogue of the virtues will therefore include the virtues required to sustain the kind of households and the kind of political communities in which men and women can seek for the good together and the virtues necessary for philosophical enquiry about the character of the good. We have then arrived at a provisional conclusion about the good life for man: the good life for man is the life spent in seeking for the good life for man, and the virtues necessary for the seeking are those which will enable us to understand what more and what else the good life for man is.

The tradition of the virtues is at variance with central features of the modern economic order and more especially its individualism, its acquisitiveness and its elevation of the values of the market to a central social place. It now becomes clear that it also involves a rejection of the modern political order. ...Modern systematic politics, whether liberal, conservative, radical or socialist, simply has to be rejected from a standpoint that owes genuine allegiance to the tradition of the virtues; for modern politics itself expresses in its institutional forms a systematic rejection of that tradition.

It is always dangerous to draw too precise parallels between one historical period and another; and among the most misleading of such parallels are those which have been drawn between our own age in Europe and North America and the epoch in which the Roman empire declined into the Dark Ages. Nonetheless certain parallels there are. 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 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 ages of barbarism and darkness. If my account of our moral condition is correct, we ought also to conclude that for some time now we too have reached that turning point. 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 dark ages which are already upon us. ...This time, however, the barbarians are not waiting beyond the frontiers; they have already been among us for quite some time. And it is our lack of consciousness of this that constitutes part of our predicament. We are waiting not for Godot, but for another—doubtless very different—St. Benedict.