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.

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.

John Locke and his works - particularly An Essay Concerning Human Understanding - are regularly and rightly presented as foundations for the Age of Enlightenment. His primary epistemological message - that the mind at birth is a blank sheet waiting to be filled by the experiences of the senses - complemented his primary political message: that human beings are free and equal and have the right to envision, create and direct the governments that rule them and the societies within which they live.

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.

Though it first aroused anger and controversy rather than admiration and acceptance, A Theologico-Political Treatise was a landmark in the analysis of theology (with particular reference to the Bible and its Jewish and Christian interpretations) and its relationship to philosophy and politics. Spinoza’s scholarly analysis, based on careful study, demonstrated that the Bible was composed by many writers over the centuries - and that even the Pentateuch, the first five books, were not the work of Moses, as was generally assumed at the time.

Durant lucidly describes the philosophical systems of such world-famous “monarchs of the mind” as Plato, Aristotle, Francis Bacon, Spinoza, Kant, Voltaire, and Nietzsche. Along with their ideas, he offers their flesh-and-blood biographies, placing their thoughts within their own time and place and elucidating their influence on our modern intellectual heritage. This book is packed with wisdom and wit.

Brought up in the household of a powerful Baron, Candide is an open-minded young man whose tutor, Pangloss, has instilled in him the belief that 'all is for the best'. But when his love for the baron's rosy-cheeked daughter is discovered, Candide is cast out to make his own way in the world. And so he and his various companions begin a breathless tour of Europe, South America and Asia, as an outrageous series of disasters befall them - earthquakes, syphilis, a brush with the Inquisition, murder - sorely testing the young hero's optimism.

Thomas Paine published Common Sense in 1776, a time when America was a hotbed of revolution. The pamphlet, which called for America's political freedom, sold more than 150,000 copies in three months. Paine not only spurred his fellow Americans to action but soon came to symbolize the spirit of the Revolution itself. His persuasive pieces, written so elegantly, spoke to the hearts and minds of all those fighting for freedom from England.

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.

The Theory of Moral Sentiments (1759) was the first major text by Adam Smith who, seven years later, was to publish what was to become one of the major economic classics, The Wealth of Nations (1776). However, Smith regarded The Theory of Moral Sentiments as his most important work because in it he identified the profound human instinct to act not necessarily in self-interest but through, as he phrased it, a ‘mutual sympathy of sentiments’.

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 his perspective in Renaissance Italy, Machiavelli's aim in this classic work was to resolve conflict with the ruling prince, Lorenzo de Medici. Machiavelli based his insights on the way people really are rather than an ideal of how they should be. This is the world's most famous master plan for seizing and holding power. Astonishing in its candor The Prince even today remains a disturbingly realistic and prophetic work on what it takes to be a prince, a king, or a president.

Sparking a flurry of heated debate, Hannah Arendt's authoritative and stunning report on the trial of German Nazi leader Adolf Eichmann first appeared in The New Yorker in 1963. This revised edition includes material that came to light after the trial, as well as Arendt's postscript. A major journalistic triumph by an intellectual of singular influence, Eichmann in Jerusalem is as shocking as it is informative - an unflinching look at one of the most unsettling (and unsettled) issues of the 20th century.

The Summa Theologica, by Thomas Aquinas, is a fundamental text in Catholic doctrine, a compendium of theology that has been studied and debated since its first publication in the 13th century. Furthermore, it has been widely regarded as one of the classics of Western philosophy, not least because, perhaps for the first time in such a systematic manner, it set out to consider the views of non-Christian figures such as Aristotle, Boethius, Muslim writers including Averroes (Ibn Rushd) and Avicenna (Ibn Sina) and the Sephardic Jewish scholar Maimonides.

Abbott used the fictional two-dimensional world of Flatland to offer pointed observations on the social hierarchy of Victorian culture. However, the novella's more enduring contribution is its examination of dimensions, for which the novella is still popular amongst mathematics, physics, and computer science students. Several films have been made from the story, including a feature film in 2007 called Flatland. Other efforts have been short or experimental films, including one narrated by Dudley Moore and a short film with Martin Sheen titled Flatland: The Movie.

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.

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.

Published in 1651, Leviathan is considered to be one of the most important works of political philosophy and a major contribution to the modern idea of central government. In the mid-17th century, England was going through a turbulent time of change and unrest, which likely shaped Hobbes' ideas on strong government. Thomas Hobbes established the social contract theory. He believed that self-government did not create the ideal state due to the human tendency to be self-serving, something he believed would eventually lead to chaos.

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.

Meditations is former U.S. President Bill Clinton's favorite book. This audio consists of a series of personal writings by Marcus Aurelius, Roman Emperor 161-180 AD, setting forth his ideas on Stoic philosophy.

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.

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.

In My Religion, Leo Tolstoy accuses the church of hiding the true meaning of Jesus, which is to be found in the Sermon on the Mount and the call to resist evil. For Tolstoy, it is this command that has been most damaged by ecclesiastical interpretation. Tolstoy had not always been possessed of the religious ideas set forth in My Religion. For 35 years of his life, he was, in the proper acceptation of the word, a nihilist - not a revolutionary socialist but a man who believed in nothing.

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.

Utopia is the name given by Sir Thomas More to an imaginary island in this political work written in 1516. Book I of Utopia, a dialogue, presents a perceptive analysis of contemporary social, economic, and moral ills in England. Book II is a narrative describing a country run according to the ideals of the English humanists, where poverty, crime, injustice, and other ills do not exist.

In these transcripts of her American Atheist Radio programs, Dr. Madalyn Murray O'Hair tells us about Freedom of Religion in Colonial America, American Deism, Rewriting of History by Christians, The Christianity of our Founding as a Nation, Free thought in American Historical Documents, Free thought Organizations in the Early U.S., Thomas Paine - American Deist and Freethinker, Colonel Ethan Allen, James Madison's Memorial and Remonstrance Against Religious Assessments, Jefferson's Idea of Religious Freedom, and Jefferson on Christianity.

Socrates, at 70+ years of age, defends himself against charges of corrupting the youth of Athens, atheism, and other false claims before accepting his fate and starting his final days on Earth.

It has been said that this work by Henry Scougal was "almost universally praised by the leaders of the Great Awakening". It is a piece of literature that has been used by God to influence the souls of men for the glory of Christ. Regardless of the times we live in, the great works of the men of God of old are still applicable today. In an age of lukewarm believers, we need the fire of God to burn us afresh and give us a clear vision of his holy will.

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.

This Thomas Paine Classic Collection contains three of Thomas Paine's most notable books: Common Sense, The Age of Reason, and The Rights of Man. Born during the Age of Enlightenment and one of America’s Founding Fathers, Thomas Paine wrote incredible works that continue to resonate with people in the modern world. Inside this collection, you’ll find some of Thomas Paine’s most famous and influential works, from his arguments against the Church to the nature of government and revolution.