

He needs to know what -would be the best government if there were no impediments to be overcome, in other words, how to construct an ideal state. The same should be true of the political scientist. The opening paragraphs of Book IV of the Politics show a significant enlargement of Aristotle’s conception of political philosophy, Any science or art ought, he says, to cover the whole of a subject, A gymnastic trainer ought indeed to be able to produce a finished athlete, but he ought also to be able to supervise the physical education of those who cannot become athletes or select suitable exercises for those who need a special kind of training.
