Asymmetry Thesis proposed by Susan Wolf says, that if one agent is blameworthy, then he should have the ability to do otherwise, while if he is praiseworthy, then he is not required to have the ability to do otherwise (Wolf 1990, 79–81). In this paper, I try to advance a new proposal in defense of Asymmetry Thesis from a perspective intersecting our discussion of moral responsibility and our discussion of virtue ethics. That is, I propose to argue that a promising (...) defense of Asymmetry Thesis may appeal to the silencing feature of moral virtues (McDowell, 1979, 1998), which proves supportive to both the initial thesis and its defending arguments (e.g., Wolf 1990). In particular, I will review Wolf’s defending argument (sec. 3), demonstrate an account on the silencing feature of moral virtues, therefrom advance my argument in support of Asymmetry Thesis (sec. 4), and consider several potential objections (sec. 5). (shrink)