Standard, familiar models portray harms and benefits as symmetrical. Usually, harm is portrayed as involving a worsening of one's situation, and benefits as involving an improvement. Yet morally, the aversion, prevention, and relief of harms seem, at least presumptively, to matter more than the provision, protection, and maintenance of comparable and often greater benefits. Standard models of harms and benefits have difficulty acknowledging this priority, much less explaining it. They also fail to identify harm accurately and reliably. In this paper, (...) I develop these problems, argue that we should reconsider our commitment to the standard models, and then merely gesture at the direction in which we might locate a superior approach, one that better accounts for the moral significance of harm and its relation to autonomy rights. (shrink)