Hobbes had distinctive views in metaphysics and epistemology, and wrote about such subjects as history, law, and religion. He also produced full-scale treatises in physics, optics, and geometry. All of these areas are covered in this Companion, most in considerable detail. The volume also reflects the multidisciplinary nature of current Hobbes scholarship by drawing together perspectives that are now being developed in parallel by philosophers, historians of science and mathematics, intellectual historians, political scientists, and literary theorists.