If it is true that we cannot possess knowledge of what is good in any absolute sense, it is equally true that we have an ethical duty to decide between what is better and what is worse.
If it is indeed the business of imagination to make politics distrust itself - reminding it that its principles are not literal facts but constructs of imagination - it is also its business to encourage politics to remake itself by remaking its image...
Clearly, imagining cannot be expected to mean exactly the same thing today as it did in the Middle Ages or antiquity. For one thing, Aristotle and Aquinas never watched television.
