A study in three parts, of which the first concerns the past, the second the present, and the third, the future. Any account of the past is bound to be colored by the perception and motivation of the historian. Not only is the historian prone to pick favorites, but her judgement are like as not to be colored by the political struggles and overriding concerns of her time, place, and culture. A memory is not wholly impartial either, but neither is it subject to the whims of popular opinion of the vicissitudes of time.