The principle of moderation can be regarded as an ethical principle of virtue or as a principle of government. On the basis of the former, moderation has a personal, ethical sense—not to go towards extremes. The latter model is more generalized and impersonal: moderation as the limitation of power by power. Both conceptions actually meet, though with the latter model more salient, in the work of Montesquieu. This article outlines Montesquieu’s view of moderation emphasizing the extent to which this view (...) cannot be understood apart from his concept of despotism. It shows that Montesquieu’s understanding of moderation entails the balancing and interaction of different powers in a State. As such, his view is more “dynamic” and relational than “substantive.” By exploring the interaction between the models of moderation as virtue and moderation as government in Montesquieu’s work, I then develop the notion of “ruling fear” in considering the continuing relevance of Montesquieu’s perspective for current understandings of moderation and political power. (shrink)