Taken simply from
Wikipedia:
The Marxist believes that all of history is the culmination of material forces acting upon social classes, and that these forces inevitably move the classes into restructuring themselves in their relationships to the means of production before finally obviating themselves in a utopian society. The conservative believes - depending upon his particular inclinations - that tradition, in
whatever form he holds it to be, is the ultimate arbiter of all social value; in the most extreme form, the conservative believes that all of history is the culmination of spiritual forces acting upon individual souls, and that these forces inevitably result in the creation of a New Heaven and a New Earth.