Book excerpt: In The Elements of Law, Natural and Politic, philosopher Thomas Hobbes endeavors to enlighten the bond between physics, psychology and politics. Thomas Hobbes was an English philosopher, considered to be one of the founders of modern political philosophy. Hobbes is best known for his 1651 book Leviathan, in which he expounds an influential formulation of social contract theory. In addition to political philosophy, Hobbes contributed to a diverse array of other fields, including history, jurisprudence, geometry, the physics of gases, theology, and ethics, as well as philosophy in general.