Karl Marx left Germany following the repression of the newspaper he edited, the Rheinische Zeitung, by the government of Prussia early in 1843. He landed in Paris, where he lived from October 1843 until December 1845.[5] It was there that he first met Proudhon, who was already a well known radical writer, with four books to his credit.[5] Despite an appeal being made as a prospective French collaborator, Proudhon declined to participate in the ill-fated Deutsch-französische Jahrbücher (German-French Yearbook) project with which Marx was intimately associated.[6]