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.

This expanded edition of John Stuart Mill's Utilitarianism includes the text of his 1868 speech to the British House of Commons defending the use of capital punishment in cases of aggravated murder. The speech is significant both because its topic remains timely and because its arguments illustrate the applicability of the principle of utility to questions of large-scale social policy.

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.

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.

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 Crowd: A Study of the Popular Mind is a seminal work on crowd psychology by Gustave Le Bon (1841-1931), a French social psychologist. He observes that a crowd forms when an influential idea unites a number of individuals and prompts them to act towards a common goal. In a crowd, the conscious personality of the individual is submerged and dominated by the collective mind. Furthermore, every sentiment becomes contagious to a degree that individuals readily sacrifice their personal interest to the collective.

Immanuel Kant's Fundamental Principles of the Metaphysics of Morals, first published in 1785, lays out Kant's essential philosophy and defines the concepts and arguments that would shape his later work. Central to Kant's doctrine is the categorical imperative, which he defines as a mandate that human actions should always conform to a universal, unchanging standard of rational morality.

'The two foes of human happiness are pain and boredom.' Arthur Schopenhauer (1788-1860) was one of the most influential philosophers of the 19th century because his humanistic, atheistic, if pessimistic views chimed with a new secularism that was emerging from a Western society dominated by religion. Despite his rather forbidding image (and a few outdated views), he is one of the most approachable German philosophers, and this is certainly evident in these two key works, The Wisdom of Life and Counsels and Maxims.

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."

"George Washington's Farewell Address" is a letter written by George Washington to the people of the United States of America. It was Washington's valedictory after 20 years of service to the new nation. It is a classic statement of republicanism, warning Americans of the political dangers they can and must avoid if they are to remain true to their values.

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 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.

"Anarchy" (1907) is a political classic written by famous anarchist Errico Malatesta. "Anarchy is a word which comes from the Greek, and signifies, strictly speaking, without government: the state of a people without any constituted authority. Before such an organization had begun to be considered possible and desirable by a whole class of thinkers, so as to be taken as the aim of a party (which party has now become one of the most important factors in modern social warfare)."

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.

Kant published this work in 1795, during the aftermath of the American Revolution and the French Revolution. The high hopes of the European Enlightenment had been dampened by the Reign of Terror in which tens of thousands of people died, and the perpetual cycle of war and temporary armistice seemed to be inescapable. Kant's essay is best known as an early articulation of the idea of a league of nations that could bring an end to all hostilities. Today, the United Nations continues to pursue that dream, but lasting peace still seems to be wishful thinking.