Abstract
The family, like so many other modern institutions, often looks more like an arena of competing wills than an ordered life in common. If we hope, therefore, to protect the special role that parents should have in relation to their children, and that the family in general should have in relation to its members, we will need a much more developed account of the goods that are at stake and why we think they are important enough to require authority, even when members of the family oppose the decisions of that authority. This essay develops an older account of authority, one rooted in the thought of Aristotle and St. Thomas Aquinas, and applies this account to our present difficulties concerning the authority of the family over its members in health care decision making.