Moral sociology has been set up partly against kantian morality of duty in Durkheim, Weber or Bourdieu’s works with unequal results, as is put in this contribution, in maintaining moral agency without it there can be no morality at all. The way altruism, an eminently moral quality, is dealt with is of considerable matter to estimate wether moral agency still obtains. Importance and nature of the dispositional grounds of practices in these sociologists’ works account for their variable success in explaining the social sources of morality while sticking to moral agency. From this point of view, this paper suggests it is interesting to contrast Aristotelian conception of moral virtues with Durkheim’s solution as well as Bourdieu’s one.