Appiah is absolutely right that the notion of idealization is both ripe and suitable for significant philosophical exploration. The subject has been central to political theory, epistemology, and philosophy of science. As If: Idealization and Ideals is the first book to explicitly combine and link all of the discussions in a very valuable--if controversial--contribution.--Jason Stanley, Yale University

Idealization is a basic feature of human thought. We proceed as if our representations were true, while knowing they are not. Kwame Anthony Appiah defends the centrality of the imagination in science, morality, and everyday life and shows that our best chance for accessing reality is to open our minds to a plurality of idealized depictions.