 By the time of the French Revolution, some such as the "Enragés" began to use the term positively in opposition to Jacobin centralisation of power, seeing revolutionary government as oxymoronic.By the turn of the 19th century, the English term anarchism had lost its initial negative connotation.In his preface to Peter Kropotkin's book "The Conquest of Bread", Kent Bromley considered early French socialist Charles Fourier to be the founder of the libertarian branch of socialist thought as opposed to the authoritarian socialist ideas of François-Noël Babeuf and Philippe Buonarroti.