This is an excellent explication and critical discussion of the main themes in Hobbes's and Locke's political philosophy. Harrison sets up the intellectual background very well, in terms of such issues as skepticism, natural law, and the problem of political authority, and draws illuminating connections and comparisons with other philosophers such as Grotius and Pufendorf. Harrison usefully brings in other texts by Hobbes and Locke to shed light on the major concepts. His interpretations are convincing and philosophically acute, and get to the heart of the matter. Highly recommended.