keep up with the demand. Enlightened rulers such as Frederick II of Prussia and Catherine II of Russia both have been recorded as supporters of the book. On the other hand, the Philosophical Dictionary was despised by religious authorities, who had a very important influence over what works were to be censored. The Philosophical Dictionary was censored in many countries, including Switzerland (Geneva) and France. In these countries, all available copies of the book were collected and burned in the town square. Voltaire, who remained an anonymous author, was repeatedly asked if he minded that the Portatif was being burned, but he calmly replied that he had no reason to be upset. References Bibliography External links Of the many editions just four of them present additions: . Dictionnaire philosophique, portatif, Londres, 1764. Dictionnaire philosophique, portatif. Nouvelle édition, Revue, corrigée, & augmentée de divers Articles par l'Auteur, Londres, 1765. Dictionnaire philosophique, portatif. Nouvelle edition. Avec des notes; Beaucoup plus correcte & plus ample que les précédentes, vol. 1, vol. 2, Amsterdam, chez Varberg, 1765 (considered by Voltaire the fifth edition). Dictionnaire philosophique, portatif. Sixieme Edition revue, corrigée & augmentée de XXXIV. Articles par l'Auteur, vol. 1, vol. 2, Londres, 1767. La Raison par Alphabet. Sixiéme édition, revue, corrigée & augmentée par l'Auteur, vol. 1, vol. 2, s. l., 1769. Voltaire A Philosophical Dictionary 12 Volumes in English from Gutenberg Extracts from Dictionnaire philosophique A Philosophical Dictionary from the French of M. de Voltaire Volume 3 (London: Hunt, 1824) Voltaire's Philosophical Dictionary (Project Gutenberg) 1764 books Works by Voltaire 18th-century encyclopedias Encyclopedias of philosophy