Free Thinkers, a name applied to the opponents of Christianity in England in the 17th and 18th centuries. Lord Herbert of Cher-bury, Hobbes, Toland, Tindal, Woolston, Chubb, and Anthony Collins were among their most noted writers. Bolingbroke, Shaftesbury, and David Hume were counted among their ablest representatives. They were never an organized sect. The French writers, including Voltaire, D'Alembert, Diderot, and Helvetius, who labored for the overthrow of Christianity, and who called themselves esprits forts, were in England called free thinkers.