“In one of his theses Marx said: 'Philosophers have so far interpreted the world. The point is to change it.' Marxism sees an innate unity between perception of the past and present practice. This unity implies continuous interaction: as time passes and history (human experience) lengthens, we draw greater lessons from it for the present; and as our present experience tells us more about the possibilities and limitations of social action, we turn to the past and obtain new comprehensions of it.”