The leviathan is the vast unity of the State. But how are unity, peace, and security to be attained? Hobbes’ answer is sovereignty, but the resurgence of interest today in Leviathan is due less to its answers than its methods: Hobbes sees politics as a science capable of the same axiomatic approach as geometry.

The English philosopher and physician John Locke (1632 - 1704) is widely regarded as one of the most influential of Enlightenment thinkers. His work had a significant effect on the development of epistemology and political philosophy. The Second Treatise on Civil Government places sovereignty in the hands of the people, as Locke's fundamental argument is that people are equal and invested with natural rights in a state of nature in which they live free from outside rule.

Immanuel Kant’s Critique of Pure Reason can lay claim to being the most important single work of modern philosophy, a work whose methodology, if not necessarily always its conclusions, has had a profound influence on almost all subsequent philosophical discourse. In this work Kant addresses, in a groundbreaking elucidation of the nature of reason, the age-old question of philosophy: “How do we know what we know?” and the limits of what it is that we can know with certainty.

Discourse on the Origin and Basis of Inequality Among Men by the philosopher Jean-Jacques Rousseau was originally written for an essay competition run by the Dijon Academy of Arts and Sciences in 1754. The question was, "What is the origin of inequality among men, and is it authorized by the natural law?" Rousseau's text is divided into four main parts: a dedication, preface, an extended inquiry into the nature of the individual, and another inquiry into the evolution of the human species within society.

Often considered the foundation of political liberalism, John Locke's Two Treatises of Government was first published anonymously in 1689, in the wake of England's Glorious Revolution. In The First Treatise of Government, Locke refutes the idea of divine monarchy, while The Second Treatise of Government articulates Locke's philosophy of government, which he based upon his theories of natural rights and the social contract.

First published in 1859, John Stuart Mill's On Liberty is an exhaustive exploration of social and civic liberty, its limits, and its consequences. Mill's work is a classic of political liberalism that contains a rational justification of the freedom of the individual in opposition to the claims of the state.

In 1831, Alexis de Tocqueville, a young French aristocrat and civil servant, made a nine-month journey through the eastern United States. The result was Democracy in America, a monumental study of the strengths and weaknesses of the nation’s evolving politics. His insightful work has become one of the most influential political texts ever written on America.

The foundation for all modern economic thought and political economy, The Wealth of Nations is the magnum opus of Scottish economist Adam Smith, who introduces the world to the very idea of economics and capitalism in the modern sense of the words.

The title Politics literally means ‘the things concerning the city’. Here, Aristotle considers the important role that politics plays in the life of the community and its contribution to harmonious and virtuous existence. It is divided into eight books and was a cornerstone in political philosophy for centuries despite certain features - including attitudes towards slaves and women - clearly placing its conclusions and advice within the confines of Athenian society of the fourth century BCE.

Plagued by spiritual anguish, devout everyman Christian fears his fate in the sinful City of Destruction. He’s told that only by embarking for the Celestial City can he achieve personal salvation. After his wife and children refuse to join him, he sets forth alone into the unknown. Mocked for his faith, tempted at every turn, and heartened by fellow pilgrims, Christian’s winding journey toward grace unfolds. But as he reaches Mount Zion, his family chooses to follow the same treacherous path, hoping to join Christian in the shining light.

In On the Genealogy of Morals, subtitled "A Polemic", Nietzsche furthers his pursuit of a clarity that is less tainted by imposed prejudices. He looks at the way attitudes towards 'morality' evolved and the way congenital ideas of morality were heavily colored by the Judaic and Christian traditions.

The Republic poses questions that endure: What is justice? What form of community fosters the best possible life for human beings? What is the nature and destiny of the soul? What form of education provides the best leaders for a good republic? What are the various forms of poetry and the other arts, and which ones should be fostered and which ones should be discouraged? How does knowing differ from believing?

From the moment of its publication in 1748, The Spirit of the Laws proved to be a controversial work provoking widespread interest. Within three years it had been translated into various European languages - and was swiftly added to the List of Prohibited Books by the Roman Catholic Church. It is a remarkable book, a potpourri of observations and comments ranging far and wide over the social activities of mankind and it exerted a great influence on political leaders in the following decades.

Plagued with doubt and uncertainty in sensory knowledge, Descartes is struck with the idea that everything he knows is false. He considers the possibility that he has been deceived by an 'evil demon' and is left with nothing to lean on, until he arrives at the phrase 'cogito ergo sum' ('I think, therefore I am'). Among the most quoted philosophical works in history, Meditations on First Philosophy and Discourse on the Method together display the full workings of Descartes' skeptical method and the formation of his famous phrase.

Originally published anonymously, The Federalist Papers first appeared in 1787 as a series of letters to New York newspapers exhorting voters to ratify the proposed Constitution of the United States. Still hotly debated and open to often controversial interpretations, the arguments first presented here by three of America's greatest patriots and political theorists were created during a critical moment in our nation's history.

Alexis de Tocqueville's renowned analysis of American democracy still has relevance today. In 1831 de Tocqueville was sent to America by the French government to study the U.S. penal system, but his real aim was to observe a democratic republic firsthand to see if such an entity could function with dignity and humanity. His travels, which took him to the cities of the Northeast, to the frontier and the Great Lakes, down the Mississippi and through the South, showed him a great deal about the United States. In 1834, he wrote Democracy in America, in which he examines the advantages and pitfalls of democracy, the conditions and conflicts among the races, and the movements that grip the country.

In 1831, Alexis de Tocqueville, a young French aristocrat and civil servant, made a nine-month journey through the eastern United States. The result was Democracy in America, a monumental study of the strengths and weaknesses of the nation’s evolving politics. His insightful work has become one of the most influential political texts ever written on America.

This famous treatise began as a letter to a young French friend who asked Edmund Burke’s opinion on whether France’s new ruling class would succeed in creating a better order. Doubtless the friend expected a favorable reply, but Burke was suspicious of certain tendencies of the Revolution from the start and perceived that the revolutionaries were actually subverting the true "social order". Blending history with principle and graceful imagery with profound practical maxims, this book is one of the most influential political treatises in the history of the world.

How is it that the law enforcer itself does not have to keep the law? How is it that the law permits the state to lawfully engage in actions which, if undertaken by individuals, would land them in jail? These are among the most intriguing issues in political and economic philosophy. More specifically, the problem of law that itself violates law is an insurmountable conundrum of all statist philosophies. The problem has never been discussed so profoundly and passionately as in this essay by Frederic Bastiat from 1850. This essay might have been written today. It applies to our own time.

Aristotle's Politics is a work of political philosophy. The end of Aristotle’s Nicomachean Ethics declared that the inquiry into ethics necessarily follows into politics, and the two works are frequently considered to be parts of a larger treatise, or perhaps connected lectures, dealing with the philosophy of human affairs. Aristotle is generally regarded as one of the most influential ancient thinkers in a number of philosophical fields, including political theory.

Rights of Man presents an impassioned defense of the Enlightenment principles of freedom and equality that Thomas Paine believed would soon sweep the world. He boldly claimed, "From a small spark, kindled in America, a flame has arisen, not to be extinguished. Without consuming...it winds its progress from nation to nation."

Dr. Arnn, president of Hillsdale College, reveals this integral unity of the Declaration and the Constitution. Together, they form the pillars upon which the liberties and rights of the American people stand. United, they have guided history's first self-governing nation, forming our government under certain universal and eternal principles. Unfortunately, the effort to redefine government to reflect "the changing and growing social order" has gone very far toward success.

On Liberty is a book by John Stuart Mill, one of the most celebrated philosophers on the subject of leadership and governing ideals. The book focuses on Mill's philosophy on utilitarianism which is one of his defining principles. The principles of the book are focused on developing a relationship between the ruling authority and liberty.

Thomas Paine's The Age of Reason; Being an Investigation of True and Fabulous Theology, published in three parts from 1794, was a best seller in America, where it caused a short-lived deistic revival. Promoting a creator-God while advocating reason in the place of revelation, Paine’s controversial pamphlet caused his native British audience, fearing the results of the French Revolution, to receive it with more hostility than their American counterparts.

The Dialogues of Plato rank with the writings of Aristotle as the most important and influential philosophical works in Western thought. In them Plato cast his teacher Socrates as the central disputant in colloquies that brilliantly probe a vast spectrum of philosophical ideas and issues.

Hannah Arendt's penetrating observations on the modern world, based on a profound knowledge of the past, have been fundamental to our understanding of our political landscape. On Revolution is her classic exploration of a phenomenon that has reshaped the globe. From the 18th-century rebellions in America and France to the explosive changes of the 20th century, Arendt traces the changing face of revolution and its relationship to war while underscoring the crucial role such events will play in the future.

The Anti-Federalist Papers is the collective name given to works written by the Founding Fathers who were opposed to or concerned with the merits of the United States Constitution of 1787. Starting on 25 September 1787 (8 days after the final draft of the US Constitution) and running through the early 1790s, these anti-Federalists published a series of essays arguing against a stronger and more energetic union as embodied in the new Constitution.

The Republic poses questions that endure: What is justice? What form of community fosters the best possible life for human beings? What is the nature and destiny of the soul? What form of education provides the best leaders for a good republic? What are the various forms of poetry and the other arts, and which ones should be fostered and which ones should be discouraged? How does knowing differ from believing?

The complete texts of the documents that tell the story of the clashes and compromises that gave birth to the Unites States of America. Should the members of the government be elected by direct vote of the people? Should the government be headed by a single executive, and how powerful should that executive be? Should immigrants be allowed into the United States? How should judges be appointed? What human rights should be safe from government infringement? In 1787, these important questions and others were raised as the states debated the merits of the proposed Constitution.

Xenophon was a Greek who admired and studied with Socrates. He marched with the Spartans and later was exiled from Athens. He wrote about the history of his times, the sayings of Socrates and about life in Greece. Edward Bysshe translated Xenophone's work in 1702. This translation has continued to have an excellent reputation. In this work Xenophon discusses the views of life taught by Socrates.