Abstract
This paper argues for two claims. First, recreational drug use is immoral because it undermines cognitive functioning. Second, for similar reasons, the state has a prima facie public policy interest in enacting legal restrictions on recreational drug use. In this context, “recreational drug use” refers to activities in which a person uses some intoxicating substance to impair, destroy, or otherwise frustrate the functioning of his cognitive faculties for the sake of pleasure or enjoyment.