Pierre Bayle

Pierre Bayle (1647-1706) was a French philosopher, writer and lexicographer who, together with Fontenelle, is regarded as the leading figure of the early Enlightenment. A Huguenot by birth, he lived at a time when relations between Catholics and Protestants were often violent, and much of his work reflects that experience. He is considered a forerunner of the encyclopedists of the mid-eighteenth century and one of the great defenders of religious toleration.

He was born at Carla-le-Comte, near Pamiers in southern France, into a Protestant family. His father, a Calvinist minister, gave him his first education, and he later studied at the Protestant academy of Puylaurens. In 1669 he entered a Jesuit college in Toulouse and converted to Catholicism, but returned to Calvinism about a month later. To escape persecution he fled to Geneva, where he came across the work of Descartes. He then spent several years as a tutor in Paris families and, in 1675, was appointed professor of philosophy at the Protestant academy of Sedan. When the French state closed that university in 1681, Bayle took refuge in the Dutch Republic, where he soon became professor of philosophy and history at the newly founded École Illustre in Rotterdam.

In Rotterdam he produced a substantial body of work. In 1682 he published a study of the comet of 1680, using it as an occasion to attack the superstitions linked to such phenomena and to argue that knowledge must be constantly tested. In the enlarged edition of 1683 he laid out the basis of a morality independent of religion, defending the then scandalous claim that an atheist need not be immoral. Between 1684 and 1687 he edited the Nouvelles de la république des lettres, a journal of literary criticism aimed at a wide readership, which proved very successful. After the revocation of the Edict of Nantes in 1685 he responded with writings against intolerance, notably the Commentaire philosophique, which rejected forced conversion and noted that Jesus never compelled anyone to believe. This stance brought him into conflict with his colleague Pierre Jurieu, whose hostility cost him his chair in 1693.

His major achievement was the Historical and Critical Dictionary, whose first volumes appeared in 1695 and 1696. It began as a revision of a Catholic biographical dictionary, but Bayle transformed it into something new. The entries were short and confined to the facts, while long footnotes cited sources, often contradictory ones, so that readers had to doubt and judge for themselves. In this way he showed that facts do not speak for themselves and that reconstructing and interpreting them is the historian's central task. The most controversial ideas of the book often lie hidden in those notes or in articles that look harmless. Bayle questioned human reason as a reliable path to firm truths and held that, given these limits, each person should follow their own conscience. He also tackled the problem of evil, arguing that rational theology cannot reconcile evil with a good and omnipotent God, a line of thought that prompted Leibniz to write his Théodicée.

Bayle died in exile in Rotterdam in 1706, before his work became famous. The Dictionary went through many editions in the eighteenth century and became a standard reference for the Enlightenment, admired by Voltaire among others. His defence of toleration and his critical method make him a direct precursor of the Enlightenment.