Mark supposedly said, according to Engels: "if they are Marxists, then I am not a Marxist", referring to the French socialist movement and his son-in-law, which

Mark supposedly said, according to Engels: "if they are Marxists, then I am not a Marxist", referring to the French socialist movement and his son-in-law, which he thought of as not radical enough, not as a rebuttal of his ideas or because "he saw his ideas being put into a something bordering a religious teaching". Be accurate.