The Coppet group (Groupe de Coppet), also known as the Coppet circle, was an informal intellectual and literary gathering centred on Germaine de Staël during the time period between the establishment of the Napoleonic First Empire (1804) and the Bourbon Restoration of 1814-1815. The name comes from Coppet Castle in Switzerland. The group, which broadly continued the activities of Madame de Staël's previous salons, had a considerable influence on the development of nineteenth century liberalism and romanticism. Stendhal referred to the Coppet guests as "the Estates General of European opinion."