History of Atheism - The Age of Enlightenment

The Age of Enlightenment

Arguably the first book in modern times solely dedicated to promoting atheism was written by French Catholic priest Jean Meslier (1664–1729), whose posthumously published lengthy philosophical essay (part of the original title: Thoughts and Feelings of Jean Meslier ... Clear and Evident Demonstrations of the Vanity and Falsity of All the Religions of the World) rejects the concept of god (both in the Christian and also in the Deistic sense), the soul, miracles and the discipline of theology. Philosopher Michel Onfray states that Meslier's work marks the beginning of "the history of true atheism".

By the 1770s, atheism in some predominantly Christian countries was ceasing to be a dangerous accusation that required denial, and was evolving into a position openly avowed by some. The first open denial of the existence of God and avowal of atheism since classical times may be that of Baron d'Holbach (1723–1789) in his 1770 work, The System of Nature. D'Holbach was a Parisian social figure who conducted a famous salon widely attended by many intellectual notables of the day, including Denis Diderot, Jean Jacques Rousseau, David Hume, Adam Smith, and Benjamin Franklin. Nevertheless, his book was published under a pseudonym, and was banned and publicly burned by the Executioner.

The Cult of Reason was a creed based on atheism devised during the French Revolution by Jacques Hébert, Pierre Gaspard Chaumette, and their supporters. It was stopped by Maximilien Robespierre, a Deist, who instituted the Cult of the Supreme Being. Both cults were the outcome of the "de-Christianization" of French society during the Revolution and part of the Reign of Terror.

The culte de la Raison developed during the uncertain period 1792–94 (Years I and III of the Revolution), following the September Massacres, when Revolutionary France was ripe with fears of internal and foreign enemies. Several Parisian churches were transformed into Temples of Reason, notably the Church of Saint-Paul Saint-Louis in the Marais. The churches were closed in May 1793 and more securely, 24 November 1793, when the Catholic Mass was forbidden.

The Cult of Reason was celebrated in a carnival atmosphere of parades, ransacking of churches, ceremonious iconoclasm, in which religious and royal images were defaced, and ceremonies which substituted the "martyrs of the Revolution" for Christian martyrs. The earliest public demonstrations took place en province, outside Paris, notably by Hébertists in Lyon, but took a further radical turn with the Fête de la Liberté ("Festival of Liberty") at Notre Dame de Paris, 10 November (20 Brumaire) 1793, in ceremonies devised and organised by Pierre-Gaspard Chaumette. The Cult of Reason centered upon a young woman designated the Goddess of Reason.

The pamphlet Answer to Dr. Priestley's Letters to a Philosophical Unbeliever (1782) is considered to be the first published declaration of atheism in Britain – plausibly the first in English (as distinct from covert or cryptically atheist works). The otherwise unknown 'William Hammon' (possibly a pseudonym) signed the preface and postscript as editor of the work, and the anonymous main text is attributed to Matthew Turner (d. 1788?), a Liverpool physician who may have known Priestley. Historian of atheism David Berman has argued strongly for Turner's authorship, but also suggested that there may have been two authors.