Emmanuel Joseph Sieyès
Emmanuel Joseph Sieyès (3 May 1748 – 20 June 1836), usually known as the Abbé Sieyès (traditional French pronunciation: [sijɛːs]; modern pronunciation: [sjejɛs]), was a French Catholic priest, abbé, and political writer who was a leading political theorist of the French Revolution (1789–1799). He also held offices in the governments of the French Consulate (1799–1804) and the First French Empire (1804–1815).