Rerum Novarum, the opening words and the title of the Encyclical issued by Leo XIII, May 15, 1891, on the "Condition of Labor". Although the Encyclical follows the lines of the traditional teaching concerning the rights and duties of property and the relations of employed and employee, it applies the old doctrines specifically to modern conditions.

The Necessity of Reforming the Church has been considered by many to be one of John Calvin's most important works. In this short letter, Calvin lays out his polemic for why the church must bring her beliefs and practices in line with scripture. Written to address the abuses and corruptions that occurred in the church during the Middle Ages, Calvin pastorally and forcefully addresses issues that carry into our present day.

Leo Tolstoy was born to an aristocratic Russian family, became a world-famous influential novelist, and then chose to lead the simple life of a peasant. Dating from this last part of his life, Tolstoy’s influential book What I Believe takes readers along on the path to a life modeled literally on Jesus Christ’s "Sermon on the Mount" and the teachings of the Gospels. In revealing and frank essays he reimagines a faith without dogma, centered solely on Jesus’ doctrine of love, humility, and self-denial.

In 1886, there appeared in Spain a little work under the title El Liberalismo es Pecado, Liberalism Is a Sin, by Dom. Felix Sarda y Salvany, a priest of Barcelona. The book excited considerable commotion. It was vigorously assailed and was sent to Rome to be added to the banned book list. However, the Holy See received the book favorably, and the book remained in circulation.

Whether viewed as subjugator or protector, Oliver Cromwell was a titan of 17th century England. French theologian Merle D'Aubigné wrote this 1847 biography for one purpose: "rectification of the common opinion with regard to Cromwell's religious character." And rectify he does.

Discourse on the Origin and Basis of Inequality Among Men was written in response to a competition run by the Academy of Dijon answering the prompt: What is the origin of inequality among men, and whether such inequality is authorized by natural law? Rousseau puts forth the concept of two types of inequity: natural/physical and moral/political. He focuses on moral inequality and its link to power and wealth. He also covers the areas of self-love, compassion for others, and free-agency.

Jonathan Edwards was a Protestant theologian and a leading revivalist preacher during the Great Awakening. Edwards wrote Freedom of the Will in the 18th century while working as a missionary to a tribe of Housatonic Native Americans in Massachusetts. He carefully drew out the differences of thought between the Calvinist and Arminian theologies and sided with the Calvinist views on humanity's will. Edwards sought to understand God's foreknowledge and how it related to free will and the ability to choose between good and evil.

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.

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.

Enquiry Concerning Political Justice and Its Influence on Morals and Happiness by William Godwin (1756-1836) was first published in February 1793, the month following the execution of Louis XVI of France. It proved to be immediately popular and influential. Godwin, the son of a Calvinist preacher, was educated at Hoxton Academy, after which, he became a minister to a dissenter congregation in Ware. 

Gorgias of Leontini, a famous teacher of rhetoric, has come to Athens to recruit students, promising to teach them how to become leaders in politics and business. A group has gathered at Callicles' house to hear Gorgias demonstrate the power of his art. This dialogue blends comic and serious discussion of the best life, providing a penetrating examination of ethics.

Many claim that Catholic Social Teaching implies the existence of a vast welfare state. In these pages, Anthony Esolen pulls back the curtain on these false philosophers, showing how they've undermined the authentic social teachings of the Church in order to neutralize the biggest threat to their plans for secularization the Catholic Church.

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.

"Pascendi Dominici Gregis" is a papal encyclical letter promulgated by Pope Pius X on September 8, 1907. The pope condemned modernism and a whole range of other principles described as "evolutionary". 

Compiled after his death in 1662, Pascal's "pensées" (thoughts) are his ideas for a book in defense of faith in a rational world. These fragments give evidence of a profoundly original thinker who had resolved the conflict between his scientific mind and heart-felt faith. This audiobook begins with an analysis of the difference between mathematical and intuitive thinking and goes on to consider the value of skepticism, contradictions, feeling, memory, and imagination.