H. L. A. Hart in his Law, Liberty, and Morality (1963) defended the view that legal paternalism and legal moralism can be clearly distinguished from each other. Hart also stated that while legal moralism is always unacceptable, paternalistic laws are often justifiable. In this paper it is argued that Hart held the right view for the wrong reasons. Hart defended legal paternalism by claiming, against J. S. Mill, that for various psychological reasons individuals do not know their own interests best. (...) It will be shown in the paper that if this view is taken, it is impossible to reject legal moralism. The fact that paternalism is sometimes justifiable while moralism is not can be more firmly founded on a distinction made by C. L. Ten (1971). Ten's point is that in matters which concern only the individuals themselves, their actions cannot be legitimately restricted by appeals to the consequences of their action alone. Paternalistic control can be justified only if the decision-making abilities of the controlled individual are temporarily diminished. (shrink)