Abstract
The type of authority needed for a good environmental public policy is discussed. We looked at some authors who saw in Leviathan, a type of authority possibly compatible with a model for environmental policy and to some others who refuted it. The need for a Leviathan, what type of Leviathan and could Hobbes’s arguments be used in environmental policy is then discussed. The tragedy of the commons, a rich metaphor for environmental policy is used as the main drive. This small essay will, even though very modestly, contribute for an almost absent environmental political philosophy, where traditional concepts such as authority, sovereignty or state are being challenged and need discussion.