Essential Freethought Library
Explore the Essential Freethought Library—a curated list of must-read books for critical thinkers, skeptics, and advocates of reason. Discover foundational works that challenge dogma and inspire intellectual freedom.
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Book
The Demon-Haunted World
by Carl Sagan
NEW YORK TIMES BESTSELLER • From the renowned astronomer and author of Cosmos comes a “powerful [and] stirring defense of informed rationality” (The Washington Post Book World) in a world where fake news stories and Internet conspiracy theories play to a disaffected American populace. LOS ANGELES TIMES BOOK PRIZE WINNER • “Glorious . . . A spirited defense of science . . . From the first page to the last, this book is a manifesto for clear thought.”—Los Angeles Times How can we make intelligent decisions about our increasingly technology-driven lives if we don’t understand the difference between the myths of pseudoscience, New Age thinking, and fundamentalist zealotry and the testable hypotheses of science? Casting a wide net through history and culture, Pulitzer Prize–winning author and distinguished astronomer Carl Sagan argues that scientific thinking is critical not only to the pursuit of truth but to the very well-being of our democratic institutions. He examines and authoritatively debunks such celebrated fallacies as witchcraft, faith healings, demons, and UFOs. And yet, disturbingly, in today’s so-called information age, pseudoscience is burgeoning, with stories of alien abduction, “channeling” past lives, and communal hallucinations commanding growing attention and respect. As Sagan demonstrates with lucid eloquence, the siren song of unreason is not just a cultural wrong turn but a dangerous plunge into darkness that threatens our most basic freedoms.


Book
The End of Faith: Religion, Terror, and the Future of Reason
by Sam Harris
Harris offers a vivid historical tour of mankind's willingness to suspend reason in favor of religious beliefs, even when those beliefs are used to justify harmful behavior and sometimes heinous crimes.
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Book
Thomas Paine: Collected Writings (LOA #76)
by Thomas Paine
Thomas Paine was the impassioned democratic voice of the Age of Revolution, and this volume brings together his best-known works: Common Sense, The American Crisis, Rights of Man, The Age of Reason, along with a selection of letters, articles and pamphlets that emphasizes Paine's American years. “I know not whether any man in the world,” wrote John Adams in 1805, “has had more influence on its inhabitants or affairs for the last thirty years than Tom Paine.” The impassioned democratic voice of the Age of Revolution, Paine wrote for his mass audience with vigor, clarity, and “common sense.” This Library of America volume is the first major new edition of his work in 50 years, and the most comprehensive single-volume collection of his writings available. Paine came to America in 1774 at age 37 after a life of obscurity and failure in England. Within fourteen months he published Common Sense, the most influential pamphlet for the American Revolution, and began a career that would see him prosecuted in England, imprisoned and nearly executed in France, and hailed and reviled in the American nation he helped create. In Common Sense, Paine set forth an inspiring vision of an independent America as an asylum for freedom and an example of popular self-government in a world oppressed by despotism and hereditary privilege. The American Crisis, begun during “the times that try men’s souls” in 1776, is a masterpiece of popular pamphleteering in which Paine vividly reports current developments, taunts and ridicules British adversaries, and enjoins his readers to remember the immense stakes of their struggle. Among the many other items included in the volume are the combative “Forester” letters, written in a reply to a Tory critic of Common Sense, and several pieces concerning the French Revolution, including an incisive argument against executing Louis XVI. Rights of Man (1791–1792), written in response to Edmund Burke’s attacks on the French Revolution, is a bold vision of an egalitarian society founded on natural rights and unbound by tradition. Paine’s detailed proposal for government assistance to the poor inspired generations of subsequent radicals and reformers. The Age of Reason (1794–1795), Paine’s most controversial work, is an unrestrained assault on the authority of the Bible and a fervent defense of the benevolent God of deism. Included in this volume are a detailed chronology of Paine’s life, informative notes, an essay on the complex printing history of Paine’s work, and an index. LIBRARY OF AMERICA is an independent nonprofit cultural organization founded in 1979 to preserve our nation’s literary heritage by publishing, and keeping permanently in print, America’s best and most significant writing. The Library of America series includes more than 300 volumes to date, authoritative editions that average 1,000 pages in length, feature cloth covers, sewn bindings, and ribbon markers, and are printed on premium acid-free paper that will last for centuries.
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Book
The Bible According to Mark Twain
by Mark Twain
Compiles letters, essays, diaries, and excerpts about heaven, hell, sinners, and saints
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Book
The Origin of Species
by Charles Darwin
Charles Darwin’s classic that exploded into public controversy, revolutionized the course of science, and continues to transform our views of the world. Few other books have created such a lasting storm of controversy as The Origin of Species. Darwin’s theory that species derive from other species by a gradual evolutionary process and that the average level of each species is heightened by the “survival of the fittest” stirred up popular debate to fever pitch. Its acceptance revolutionized the course of science. As Sir Julian Huxley, the noted biologist, points out in his illuminating introduction, the importance of Darwin’s contribution to modern scientific knowledge is almost impossible to evaluate: “a truly great book, one which can still be read with profit by professional biologist.” Includes an Introduction by Sir Julian Huxley
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