Jeffrey Collins is a historian of ideas, with a focus on early modern political thought. He is the author of two books — The Allegiance of Thomas Hobbes (Oxford, 2005) and In the Shadow of Leviathan: John Locke and the Politics of Conscience (Cambridge, 2020) — as well as many articles and book chapters on subjects such as religious war, toleration, atheism, church and state. Collins is a regular contributor of reviews to both the Times Literary Supplement and the Wall Street Journal.