He was released during the revolution of 1848, only to resume his attacks on existing institutions. The revolution had not satisfied him. The violence of the Société républicaine centrale, which was founded by Blanqui to demand a change of government, brought him into conflict with the more moderate Republicans, and in 1849 he was sentenced to ten years' imprisonment. While in prison, he sent a brief address (written in the Prison of Belle-Ile-en-Mer, 10 February 1851) to a committee of social democrats in London. The text of the address was noted and introduced by Karl Marx.Introduction to the Leaflet of L. A. Blanqui's Toast Sent to the Refugee Committee, written at the prison of Belle-Ile-en-Mer, 10 February 1851, hosted at Marxists.org, last retrieved 25 April 2007
